Home / 724,429.56-999,693.90-402,131.16

Finding the Fourth Proportional to 724,429.56, 999,693.90 and 402,131.16

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Solution

The fourth proportional to 724,429.56, 999,693.90 and 402,131.16 is: 554,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,429.56 : 999,693.90 = 402,131.16 : x
  2. Step 2: Convert to fraction form
    724,429.56/999,693.90 = 402,131.16/x
  3. Step 3: Cross multiply
    724,429.56x = 999,693.90 × 402,131.16
  4. Step 4: Simplify right side
    724,429.56x = 402,008,067,651.92
  5. Step 5: Solve for x
    x = 402,008,067,651.92/724,429.56
  6. Step 6: Final answer
    x = 554,930.51

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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.