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Finding the Fourth Proportional to 647,463.20, 971,194.80 and 579,228.80

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Solution

The fourth proportional to 647,463.20, 971,194.80 and 579,228.80 is: 868,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,463.20 : 971,194.80 = 579,228.80 : x
  2. Step 2: Convert to fraction form
    647,463.20/971,194.80 = 579,228.80/x
  3. Step 3: Cross multiply
    647,463.20x = 971,194.80 × 579,228.80
  4. Step 4: Simplify right side
    647,463.20x = 562,543,998,570.24
  5. Step 5: Solve for x
    x = 562,543,998,570.24/647,463.20
  6. Step 6: Final answer
    x = 868,843.20

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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.