Home / 783,074.70-1,172,862.45-643,106.70

Finding the Fourth Proportional to 783,074.70, 1,172,862.45 and 643,106.70

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Solution

The fourth proportional to 783,074.70, 1,172,862.45 and 643,106.70 is: 963,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,074.70 : 1,172,862.45 = 643,106.70 : x
  2. Step 2: Convert to fraction form
    783,074.70/1,172,862.45 = 643,106.70/x
  3. Step 3: Cross multiply
    783,074.70x = 1,172,862.45 × 643,106.70
  4. Step 4: Simplify right side
    783,074.70x = 754,275,699,773.42
  5. Step 5: Solve for x
    x = 754,275,699,773.42/783,074.70
  6. Step 6: Final answer
    x = 963,223.18

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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.