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Finding the Fourth Proportional to 498,712.60, 748,068.90 and 380,614.60

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Solution

The fourth proportional to 498,712.60, 748,068.90 and 380,614.60 is: 570,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,712.60 : 748,068.90 = 380,614.60 : x
  2. Step 2: Convert to fraction form
    498,712.60/748,068.90 = 380,614.60/x
  3. Step 3: Cross multiply
    498,712.60x = 748,068.90 × 380,614.60
  4. Step 4: Simplify right side
    498,712.60x = 284,725,945,145.94
  5. Step 5: Solve for x
    x = 284,725,945,145.94/498,712.60
  6. Step 6: Final answer
    x = 570,921.90

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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.