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Finding the Fourth Proportional to 486,655.93, 730,115.52 and 439,810.39

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Solution

The fourth proportional to 486,655.93, 730,115.52 and 439,810.39 is: 659,834.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,655.93 : 730,115.52 = 439,810.39 : x
  2. Step 2: Convert to fraction form
    486,655.93/730,115.52 = 439,810.39/x
  3. Step 3: Cross multiply
    486,655.93x = 730,115.52 × 439,810.39
  4. Step 4: Simplify right side
    486,655.93x = 321,112,391,596.25
  5. Step 5: Solve for x
    x = 321,112,391,596.25/486,655.93
  6. Step 6: Final answer
    x = 659,834.54

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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.