Home / 781,524.77-1,172,123.13-220,428.05

Finding the Fourth Proportional to 781,524.77, 1,172,123.13 and 220,428.05

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Solution

The fourth proportional to 781,524.77, 1,172,123.13 and 220,428.05 is: 330,595.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,524.77 : 1,172,123.13 = 220,428.05 : x
  2. Step 2: Convert to fraction form
    781,524.77/1,172,123.13 = 220,428.05/x
  3. Step 3: Cross multiply
    781,524.77x = 1,172,123.13 × 220,428.05
  4. Step 4: Simplify right side
    781,524.77x = 258,368,820,014.93
  5. Step 5: Solve for x
    x = 258,368,820,014.93/781,524.77
  6. Step 6: Final answer
    x = 330,595.82

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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.