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Finding the Fourth Proportional to 608,805,042.80, 911,695,909.80 and 487,872,690.80

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Solution

The fourth proportional to 608,805,042.80, 911,695,909.80 and 487,872,690.80 is: 730,597,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,805,042.80 : 911,695,909.80 = 487,872,690.80 : x
  2. Step 2: Convert to fraction form
    608,805,042.80/911,695,909.80 = 487,872,690.80/x
  3. Step 3: Cross multiply
    608,805,042.80x = 911,695,909.80 × 487,872,690.80
  4. Step 4: Simplify right side
    608,805,042.80x = 444,791,536,705,480,064
  5. Step 5: Solve for x
    x = 444,791,536,705,480,064/608,805,042.80
  6. Step 6: Final answer
    x = 730,597,655.14

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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.