Home / 782,517.84-1,079,915.08-438,333.66

Finding the Fourth Proportional to 782,517.84, 1,079,915.08 and 438,333.66

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Solution

The fourth proportional to 782,517.84, 1,079,915.08 and 438,333.66 is: 604,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,517.84 : 1,079,915.08 = 438,333.66 : x
  2. Step 2: Convert to fraction form
    782,517.84/1,079,915.08 = 438,333.66/x
  3. Step 3: Cross multiply
    782,517.84x = 1,079,915.08 × 438,333.66
  4. Step 4: Simplify right side
    782,517.84x = 473,363,129,505.59
  5. Step 5: Solve for x
    x = 473,363,129,505.59/782,517.84
  6. Step 6: Final answer
    x = 604,923.12

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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.