Home / 648,001.70-972,002.55-398,824.10

Finding the Fourth Proportional to 648,001.70, 972,002.55 and 398,824.10

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Solution

The fourth proportional to 648,001.70, 972,002.55 and 398,824.10 is: 598,236.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.70 : 972,002.55 = 398,824.10 : x
  2. Step 2: Convert to fraction form
    648,001.70/972,002.55 = 398,824.10/x
  3. Step 3: Cross multiply
    648,001.70x = 972,002.55 × 398,824.10
  4. Step 4: Simplify right side
    648,001.70x = 387,658,042,201.46
  5. Step 5: Solve for x
    x = 387,658,042,201.46/648,001.70
  6. Step 6: Final answer
    x = 598,236.15

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Similar ratio
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1.5x scale

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.