Home / 781,405.86-1,172,154.20-301,636.38

Finding the Fourth Proportional to 781,405.86, 1,172,154.20 and 301,636.38

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Solution

The fourth proportional to 781,405.86, 1,172,154.20 and 301,636.38 is: 452,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,405.86 : 1,172,154.20 = 301,636.38 : x
  2. Step 2: Convert to fraction form
    781,405.86/1,172,154.20 = 301,636.38/x
  3. Step 3: Cross multiply
    781,405.86x = 1,172,154.20 × 301,636.38
  4. Step 4: Simplify right side
    781,405.86x = 353,564,349,689.80
  5. Step 5: Solve for x
    x = 353,564,349,689.80/781,405.86
  6. Step 6: Final answer
    x = 452,472.10

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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.