Home / 782,332.89-1,079,496.07-455,699.71

Finding the Fourth Proportional to 782,332.89, 1,079,496.07 and 455,699.71

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Solution

The fourth proportional to 782,332.89, 1,079,496.07 and 455,699.71 is: 628,793.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,332.89 : 1,079,496.07 = 455,699.71 : x
  2. Step 2: Convert to fraction form
    782,332.89/1,079,496.07 = 455,699.71/x
  3. Step 3: Cross multiply
    782,332.89x = 1,079,496.07 × 455,699.71
  4. Step 4: Simplify right side
    782,332.89x = 491,926,046,045.14
  5. Step 5: Solve for x
    x = 491,926,046,045.14/782,332.89
  6. Step 6: Final answer
    x = 628,793.77

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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.