Home / 724,397.34-1,086,153.12-345,433.98

Finding the Fourth Proportional to 724,397.34, 1,086,153.12 and 345,433.98

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Solution

The fourth proportional to 724,397.34, 1,086,153.12 and 345,433.98 is: 517,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,397.34 : 1,086,153.12 = 345,433.98 : x
  2. Step 2: Convert to fraction form
    724,397.34/1,086,153.12 = 345,433.98/x
  3. Step 3: Cross multiply
    724,397.34x = 1,086,153.12 × 345,433.98
  4. Step 4: Simplify right side
    724,397.34x = 375,194,195,131.02
  5. Step 5: Solve for x
    x = 375,194,195,131.02/724,397.34
  6. Step 6: Final answer
    x = 517,939.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.