Home / 638,001.36-880,420.59-351,526.23

Finding the Fourth Proportional to 638,001.36, 880,420.59 and 351,526.23

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Solution

The fourth proportional to 638,001.36, 880,420.59 and 351,526.23 is: 485,094.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,001.36 : 880,420.59 = 351,526.23 : x
  2. Step 2: Convert to fraction form
    638,001.36/880,420.59 = 351,526.23/x
  3. Step 3: Cross multiply
    638,001.36x = 880,420.59 × 351,526.23
  4. Step 4: Simplify right side
    638,001.36x = 309,490,930,817.08
  5. Step 5: Solve for x
    x = 309,490,930,817.08/638,001.36
  6. Step 6: Final answer
    x = 485,094.47

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.