Home / 724,397.83-1,086,153.87-345,434.47

Finding the Fourth Proportional to 724,397.83, 1,086,153.87 and 345,434.47

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Solution

The fourth proportional to 724,397.83, 1,086,153.87 and 345,434.47 is: 517,940.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,397.83 : 1,086,153.87 = 345,434.47 : x
  2. Step 2: Convert to fraction form
    724,397.83/1,086,153.87 = 345,434.47/x
  3. Step 3: Cross multiply
    724,397.83x = 1,086,153.87 × 345,434.47
  4. Step 4: Simplify right side
    724,397.83x = 375,194,986,421.90
  5. Step 5: Solve for x
    x = 375,194,986,421.90/724,397.83
  6. Step 6: Final answer
    x = 517,940.52

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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.