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Finding the Fourth Proportional to 663,916.60, 994,562.70 and 363,860.20

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Solution

The fourth proportional to 663,916.60, 994,562.70 and 363,860.20 is: 545,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,916.60 : 994,562.70 = 363,860.20 : x
  2. Step 2: Convert to fraction form
    663,916.60/994,562.70 = 363,860.20/x
  3. Step 3: Cross multiply
    663,916.60x = 994,562.70 × 363,860.20
  4. Step 4: Simplify right side
    663,916.60x = 361,881,782,934.54
  5. Step 5: Solve for x
    x = 361,881,782,934.54/663,916.60
  6. Step 6: Final answer
    x = 545,071.15

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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.