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Finding the Fourth Proportional to 647,726.20, 971,589.30 and 597,959.80

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Solution

The fourth proportional to 647,726.20, 971,589.30 and 597,959.80 is: 896,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,726.20 : 971,589.30 = 597,959.80 : x
  2. Step 2: Convert to fraction form
    647,726.20/971,589.30 = 597,959.80/x
  3. Step 3: Cross multiply
    647,726.20x = 971,589.30 × 597,959.80
  4. Step 4: Simplify right side
    647,726.20x = 580,971,343,510.14
  5. Step 5: Solve for x
    x = 580,971,343,510.14/647,726.20
  6. Step 6: Final answer
    x = 896,939.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.