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Finding the Fourth Proportional to 498,722.60, 748,083.90 and 346,507.40

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Solution

The fourth proportional to 498,722.60, 748,083.90 and 346,507.40 is: 519,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,722.60 : 748,083.90 = 346,507.40 : x
  2. Step 2: Convert to fraction form
    498,722.60/748,083.90 = 346,507.40/x
  3. Step 3: Cross multiply
    498,722.60x = 748,083.90 × 346,507.40
  4. Step 4: Simplify right side
    498,722.60x = 259,216,607,170.86
  5. Step 5: Solve for x
    x = 259,216,607,170.86/498,722.60
  6. Step 6: Final answer
    x = 519,761.10

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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.