Home / 1,078,840.30-1,620,010.05-725,421.10

Finding the Fourth Proportional to 1,078,840.30, 1,620,010.05 and 725,421.10

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Solution

The fourth proportional to 1,078,840.30, 1,620,010.05 and 725,421.10 is: 1,089,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,840.30 : 1,620,010.05 = 725,421.10 : x
  2. Step 2: Convert to fraction form
    1,078,840.30/1,620,010.05 = 725,421.10/x
  3. Step 3: Cross multiply
    1,078,840.30x = 1,620,010.05 × 725,421.10
  4. Step 4: Simplify right side
    1,078,840.30x = 1,175,189,472,482.06
  5. Step 5: Solve for x
    x = 1,175,189,472,482.06/1,078,840.30
  6. Step 6: Final answer
    x = 1,089,308.10

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Double scale
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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.