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Finding the Fourth Proportional to 641,327.71, 884,646.62 and 423,538.38

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Solution

The fourth proportional to 641,327.71, 884,646.62 and 423,538.38 is: 584,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,327.71 : 884,646.62 = 423,538.38 : x
  2. Step 2: Convert to fraction form
    641,327.71/884,646.62 = 423,538.38/x
  3. Step 3: Cross multiply
    641,327.71x = 884,646.62 × 423,538.38
  4. Step 4: Simplify right side
    641,327.71x = 374,681,798,471.93
  5. Step 5: Solve for x
    x = 374,681,798,471.93/641,327.71
  6. Step 6: Final answer
    x = 584,228.31

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1.5x scale

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.