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Finding the Fourth Proportional to 999,947.76, 1,499,612.64 and 290,028

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Solution

The fourth proportional to 999,947.76, 1,499,612.64 and 290,028 is: 434,952.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,947.76 : 1,499,612.64 = 290,028 : x
  2. Step 2: Convert to fraction form
    999,947.76/1,499,612.64 = 290,028/x
  3. Step 3: Cross multiply
    999,947.76x = 1,499,612.64 × 290,028
  4. Step 4: Simplify right side
    999,947.76x = 434,929,654,753.92
  5. Step 5: Solve for x
    x = 434,929,654,753.92/999,947.76
  6. Step 6: Final answer
    x = 434,952.38

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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.