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Finding the Fourth Proportional to 992,503.81, 1,488,614.89 and 318,497.95

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Solution

The fourth proportional to 992,503.81, 1,488,614.89 and 318,497.95 is: 477,701.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,503.81 : 1,488,614.89 = 318,497.95 : x
  2. Step 2: Convert to fraction form
    992,503.81/1,488,614.89 = 318,497.95/x
  3. Step 3: Cross multiply
    992,503.81x = 1,488,614.89 × 318,497.95
  4. Step 4: Simplify right side
    992,503.81x = 474,120,790,804.48
  5. Step 5: Solve for x
    x = 474,120,790,804.48/992,503.81
  6. Step 6: Final answer
    x = 477,701.73

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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.