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Finding the Fourth Proportional to 718,648.92, 990,704.88 and 565,422.84

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Solution

The fourth proportional to 718,648.92, 990,704.88 and 565,422.84 is: 779,472.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,648.92 : 990,704.88 = 565,422.84 : x
  2. Step 2: Convert to fraction form
    718,648.92/990,704.88 = 565,422.84/x
  3. Step 3: Cross multiply
    718,648.92x = 990,704.88 × 565,422.84
  4. Step 4: Simplify right side
    718,648.92x = 560,167,166,851.46
  5. Step 5: Solve for x
    x = 560,167,166,851.46/718,648.92
  6. Step 6: Final answer
    x = 779,472.63

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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.