Home / 782,715.85-1,079,670.45-517,500.57

Finding the Fourth Proportional to 782,715.85, 1,079,670.45 and 517,500.57

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Solution

The fourth proportional to 782,715.85, 1,079,670.45 and 517,500.57 is: 713,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,715.85 : 1,079,670.45 = 517,500.57 : x
  2. Step 2: Convert to fraction form
    782,715.85/1,079,670.45 = 517,500.57/x
  3. Step 3: Cross multiply
    782,715.85x = 1,079,670.45 × 517,500.57
  4. Step 4: Simplify right side
    782,715.85x = 558,730,067,888.80
  5. Step 5: Solve for x
    x = 558,730,067,888.80/782,715.85
  6. Step 6: Final answer
    x = 713,835.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.