Home / 724,279.52-999,424.68-402,003.20

Finding the Fourth Proportional to 724,279.52, 999,424.68 and 402,003.20

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Solution

The fourth proportional to 724,279.52, 999,424.68 and 402,003.20 is: 554,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,279.52 : 999,424.68 = 402,003.20 : x
  2. Step 2: Convert to fraction form
    724,279.52/999,424.68 = 402,003.20/x
  3. Step 3: Cross multiply
    724,279.52x = 999,424.68 × 402,003.20
  4. Step 4: Simplify right side
    724,279.52x = 401,771,920,510.03
  5. Step 5: Solve for x
    x = 401,771,920,510.03/724,279.52
  6. Step 6: Final answer
    x = 554,719.43

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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.