Home / 783,082.70-1,172,874.45-643,114.70

Finding the Fourth Proportional to 783,082.70, 1,172,874.45 and 643,114.70

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Solution

The fourth proportional to 783,082.70, 1,172,874.45 and 643,114.70 is: 963,235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,082.70 : 1,172,874.45 = 643,114.70 : x
  2. Step 2: Convert to fraction form
    783,082.70/1,172,874.45 = 643,114.70/x
  3. Step 3: Cross multiply
    783,082.70x = 1,172,874.45 × 643,114.70
  4. Step 4: Simplify right side
    783,082.70x = 754,292,800,049.42
  5. Step 5: Solve for x
    x = 754,292,800,049.42/783,082.70
  6. Step 6: Final answer
    x = 963,235.17

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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.