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Finding the Fourth Proportional to 1,422,494.55, 1,962,447.08 and 932,581.71

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Solution

The fourth proportional to 1,422,494.55, 1,962,447.08 and 932,581.71 is: 1,286,572.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,494.55 : 1,962,447.08 = 932,581.71 : x
  2. Step 2: Convert to fraction form
    1,422,494.55/1,962,447.08 = 932,581.71/x
  3. Step 3: Cross multiply
    1,422,494.55x = 1,962,447.08 × 932,581.71
  4. Step 4: Simplify right side
    1,422,494.55x = 1,830,142,248,988.00
  5. Step 5: Solve for x
    x = 1,830,142,248,988.00/1,422,494.55
  6. Step 6: Final answer
    x = 1,286,572.42

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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.