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Finding the Fourth Proportional to 724,616.16, 1,000,001.60 and 402,326.32

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Solution

The fourth proportional to 724,616.16, 1,000,001.60 and 402,326.32 is: 555,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,616.16 : 1,000,001.60 = 402,326.32 : x
  2. Step 2: Convert to fraction form
    724,616.16/1,000,001.60 = 402,326.32/x
  3. Step 3: Cross multiply
    724,616.16x = 1,000,001.60 × 402,326.32
  4. Step 4: Simplify right side
    724,616.16x = 402,326,963,722.11
  5. Step 5: Solve for x
    x = 402,326,963,722.11/724,616.16
  6. Step 6: Final answer
    x = 555,227.70

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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.