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Finding the Fourth Proportional to 724,613.64, 999,998.16 and 402,323.76

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Solution

The fourth proportional to 724,613.64, 999,998.16 and 402,323.76 is: 555,224.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,613.64 : 999,998.16 = 402,323.76 : x
  2. Step 2: Convert to fraction form
    724,613.64/999,998.16 = 402,323.76/x
  3. Step 3: Cross multiply
    724,613.64x = 999,998.16 × 402,323.76
  4. Step 4: Simplify right side
    724,613.64x = 402,323,019,724.28
  5. Step 5: Solve for x
    x = 402,323,019,724.28/724,613.64
  6. Step 6: Final answer
    x = 555,224.19

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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.