Home / 782,516.85-1,079,913.70-438,332.66

Finding the Fourth Proportional to 782,516.85, 1,079,913.70 and 438,332.66

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Solution

The fourth proportional to 782,516.85, 1,079,913.70 and 438,332.66 is: 604,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,516.85 : 1,079,913.70 = 438,332.66 : x
  2. Step 2: Convert to fraction form
    782,516.85/1,079,913.70 = 438,332.66/x
  3. Step 3: Cross multiply
    782,516.85x = 1,079,913.70 × 438,332.66
  4. Step 4: Simplify right side
    782,516.85x = 473,361,444,691.44
  5. Step 5: Solve for x
    x = 473,361,444,691.44/782,516.85
  6. Step 6: Final answer
    x = 604,921.73

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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.