Home / 657,071,805.60-985,607,708.40-398,578,903.20

Finding the Fourth Proportional to 657,071,805.60, 985,607,708.40 and 398,578,903.20

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Solution

The fourth proportional to 657,071,805.60, 985,607,708.40 and 398,578,903.20 is: 597,868,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,071,805.60 : 985,607,708.40 = 398,578,903.20 : x
  2. Step 2: Convert to fraction form
    657,071,805.60/985,607,708.40 = 398,578,903.20/x
  3. Step 3: Cross multiply
    657,071,805.60x = 985,607,708.40 × 398,578,903.20
  4. Step 4: Simplify right side
    657,071,805.60x = 392,842,439,399,537,408
  5. Step 5: Solve for x
    x = 392,842,439,399,537,408/657,071,805.60
  6. Step 6: Final answer
    x = 597,868,354.80

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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.