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Finding the Fourth Proportional to 644,612.20, 966,918.30 and 584,477.80

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Solution

The fourth proportional to 644,612.20, 966,918.30 and 584,477.80 is: 876,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,612.20 : 966,918.30 = 584,477.80 : x
  2. Step 2: Convert to fraction form
    644,612.20/966,918.30 = 584,477.80/x
  3. Step 3: Cross multiply
    644,612.20x = 966,918.30 × 584,477.80
  4. Step 4: Simplify right side
    644,612.20x = 565,142,280,763.74
  5. Step 5: Solve for x
    x = 565,142,280,763.74/644,612.20
  6. Step 6: Final answer
    x = 876,716.70

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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.