Home / 781,685.10-1,172,916.45-308,385.90

Finding the Fourth Proportional to 781,685.10, 1,172,916.45 and 308,385.90

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Solution

The fourth proportional to 781,685.10, 1,172,916.45 and 308,385.90 is: 462,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,685.10 : 1,172,916.45 = 308,385.90 : x
  2. Step 2: Convert to fraction form
    781,685.10/1,172,916.45 = 308,385.90/x
  3. Step 3: Cross multiply
    781,685.10x = 1,172,916.45 × 308,385.90
  4. Step 4: Simplify right side
    781,685.10x = 361,710,895,058.06
  5. Step 5: Solve for x
    x = 361,710,895,058.06/781,685.10
  6. Step 6: Final answer
    x = 462,732.24

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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.