Home / 724,426.56-999,689.76-402,128.16

Finding the Fourth Proportional to 724,426.56, 999,689.76 and 402,128.16

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Solution

The fourth proportional to 724,426.56, 999,689.76 and 402,128.16 is: 554,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,426.56 : 999,689.76 = 402,128.16 : x
  2. Step 2: Convert to fraction form
    724,426.56/999,689.76 = 402,128.16/x
  3. Step 3: Cross multiply
    724,426.56x = 999,689.76 × 402,128.16
  4. Step 4: Simplify right side
    724,426.56x = 402,003,403,759.64
  5. Step 5: Solve for x
    x = 402,003,403,759.64/724,426.56
  6. Step 6: Final answer
    x = 554,926.37

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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.