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Finding the Fourth Proportional to 632,387.59, 872,449.73 and 402,903.78

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Solution

The fourth proportional to 632,387.59, 872,449.73 and 402,903.78 is: 555,851.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,387.59 : 872,449.73 = 402,903.78 : x
  2. Step 2: Convert to fraction form
    632,387.59/872,449.73 = 402,903.78/x
  3. Step 3: Cross multiply
    632,387.59x = 872,449.73 × 402,903.78
  4. Step 4: Simplify right side
    632,387.59x = 351,513,290,301.66
  5. Step 5: Solve for x
    x = 351,513,290,301.66/632,387.59
  6. Step 6: Final answer
    x = 555,851.03

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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.