Home / 724,425.48-999,693.36-402,139.44

Finding the Fourth Proportional to 724,425.48, 999,693.36 and 402,139.44

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Solution

The fourth proportional to 724,425.48, 999,693.36 and 402,139.44 is: 554,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,425.48 : 999,693.36 = 402,139.44 : x
  2. Step 2: Convert to fraction form
    724,425.48/999,693.36 = 402,139.44/x
  3. Step 3: Cross multiply
    724,425.48x = 999,693.36 × 402,139.44
  4. Step 4: Simplify right side
    724,425.48x = 402,016,127,962.12
  5. Step 5: Solve for x
    x = 402,016,127,962.12/724,425.48
  6. Step 6: Final answer
    x = 554,944.77

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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.