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Finding the Fourth Proportional to 609,731.80, 912,005.70 and 547,005.40

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Solution

The fourth proportional to 609,731.80, 912,005.70 and 547,005.40 is: 818,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,731.80 : 912,005.70 = 547,005.40 : x
  2. Step 2: Convert to fraction form
    609,731.80/912,005.70 = 547,005.40/x
  3. Step 3: Cross multiply
    609,731.80x = 912,005.70 × 547,005.40
  4. Step 4: Simplify right side
    609,731.80x = 498,872,042,730.78
  5. Step 5: Solve for x
    x = 498,872,042,730.78/609,731.80
  6. Step 6: Final answer
    x = 818,182.75

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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.