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Finding the Fourth Proportional to 305,591,712.80, 458,387,569.20 and 305,591,712.80

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Solution

The fourth proportional to 305,591,712.80, 458,387,569.20 and 305,591,712.80 is: 458,387,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,591,712.80 : 458,387,569.20 = 305,591,712.80 : x
  2. Step 2: Convert to fraction form
    305,591,712.80/458,387,569.20 = 305,591,712.80/x
  3. Step 3: Cross multiply
    305,591,712.80x = 458,387,569.20 × 305,591,712.80
  4. Step 4: Simplify right side
    305,591,712.80x = 140,079,442,398,056,528
  5. Step 5: Solve for x
    x = 140,079,442,398,056,528/305,591,712.80
  6. Step 6: Final answer
    x = 458,387,569.20

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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.