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Finding the Fourth Proportional to 981,500.90, 1,354,458.03 and 551,780.92

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Solution

The fourth proportional to 981,500.90, 1,354,458.03 and 551,780.92 is: 761,450.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,500.90 : 1,354,458.03 = 551,780.92 : x
  2. Step 2: Convert to fraction form
    981,500.90/1,354,458.03 = 551,780.92/x
  3. Step 3: Cross multiply
    981,500.90x = 1,354,458.03 × 551,780.92
  4. Step 4: Simplify right side
    981,500.90x = 747,364,091,122.50
  5. Step 5: Solve for x
    x = 747,364,091,122.50/981,500.90
  6. Step 6: Final answer
    x = 761,450.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.