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Finding the Fourth Proportional to 781,866, 1,172,864.88 and 249,462.72

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Solution

The fourth proportional to 781,866, 1,172,864.88 and 249,462.72 is: 374,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,866 : 1,172,864.88 = 249,462.72 : x
  2. Step 2: Convert to fraction form
    781,866/1,172,864.88 = 249,462.72/x
  3. Step 3: Cross multiply
    781,866x = 1,172,864.88 × 249,462.72
  4. Step 4: Simplify right side
    781,866x = 292,586,063,157.27
  5. Step 5: Solve for x
    x = 292,586,063,157.27/781,866
  6. Step 6: Final answer
    x = 374,215.10

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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.