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Finding the Fourth Proportional to 647,444.20, 971,166.30 and 608,045.80

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Solution

The fourth proportional to 647,444.20, 971,166.30 and 608,045.80 is: 912,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,444.20 : 971,166.30 = 608,045.80 : x
  2. Step 2: Convert to fraction form
    647,444.20/971,166.30 = 608,045.80/x
  3. Step 3: Cross multiply
    647,444.20x = 971,166.30 × 608,045.80
  4. Step 4: Simplify right side
    647,444.20x = 590,513,589,816.54
  5. Step 5: Solve for x
    x = 590,513,589,816.54/647,444.20
  6. Step 6: Final answer
    x = 912,068.70

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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.