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Finding the Fourth Proportional to 486,026.40, 729,039.60 and 472,904.40

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Solution

The fourth proportional to 486,026.40, 729,039.60 and 472,904.40 is: 709,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,026.40 : 729,039.60 = 472,904.40 : x
  2. Step 2: Convert to fraction form
    486,026.40/729,039.60 = 472,904.40/x
  3. Step 3: Cross multiply
    486,026.40x = 729,039.60 × 472,904.40
  4. Step 4: Simplify right side
    486,026.40x = 344,766,034,614.24
  5. Step 5: Solve for x
    x = 344,766,034,614.24/486,026.40
  6. Step 6: Final answer
    x = 709,356.60

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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.