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Finding the Fourth Proportional to 659,543.31, 911,024.01 and 487,810.35

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Solution

The fourth proportional to 659,543.31, 911,024.01 and 487,810.35 is: 673,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,543.31 : 911,024.01 = 487,810.35 : x
  2. Step 2: Convert to fraction form
    659,543.31/911,024.01 = 487,810.35/x
  3. Step 3: Cross multiply
    659,543.31x = 911,024.01 × 487,810.35
  4. Step 4: Simplify right side
    659,543.31x = 444,406,941,176.50
  5. Step 5: Solve for x
    x = 444,406,941,176.50/659,543.31
  6. Step 6: Final answer
    x = 673,810.10

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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.