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Finding the Fourth Proportional to 659,793.31, 985,596.19 and 478,439.07

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Solution

The fourth proportional to 659,793.31, 985,596.19 and 478,439.07 is: 714,690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,793.31 : 985,596.19 = 478,439.07 : x
  2. Step 2: Convert to fraction form
    659,793.31/985,596.19 = 478,439.07/x
  3. Step 3: Cross multiply
    659,793.31x = 985,596.19 × 478,439.07
  4. Step 4: Simplify right side
    659,793.31x = 471,547,725,191.04
  5. Step 5: Solve for x
    x = 471,547,725,191.04/659,793.31
  6. Step 6: Final answer
    x = 714,690.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.