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Finding the Fourth Proportional to 999,363.60, 1,499,239.80 and 289,414.80

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Solution

The fourth proportional to 999,363.60, 1,499,239.80 and 289,414.80 is: 434,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,363.60 : 1,499,239.80 = 289,414.80 : x
  2. Step 2: Convert to fraction form
    999,363.60/1,499,239.80 = 289,414.80/x
  3. Step 3: Cross multiply
    999,363.60x = 1,499,239.80 × 289,414.80
  4. Step 4: Simplify right side
    999,363.60x = 433,902,186,869.04
  5. Step 5: Solve for x
    x = 433,902,186,869.04/999,363.60
  6. Step 6: Final answer
    x = 434,178.50

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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.