Home / 1,081,105,145.10-1,621,657,717.65-391,118,892.30

Finding the Fourth Proportional to 1,081,105,145.10, 1,621,657,717.65 and 391,118,892.30

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Solution

The fourth proportional to 1,081,105,145.10, 1,621,657,717.65 and 391,118,892.30 is: 586,678,338.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,105,145.10 : 1,621,657,717.65 = 391,118,892.30 : x
  2. Step 2: Convert to fraction form
    1,081,105,145.10/1,621,657,717.65 = 391,118,892.30/x
  3. Step 3: Cross multiply
    1,081,105,145.10x = 1,621,657,717.65 × 391,118,892.30
  4. Step 4: Simplify right side
    1,081,105,145.10x = 634,260,970,217,014,272
  5. Step 5: Solve for x
    x = 634,260,970,217,014,272/1,081,105,145.10
  6. Step 6: Final answer
    x = 586,678,338.45

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Half scale
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Double scale
Find fourth proportional to 1,081,105,146.10, 1,621,657,719.15 and 391,118,893.30
Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.