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Finding the Fourth Proportional to 999,444.76, 1,499,189.01 and 400,687.90

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Solution

The fourth proportional to 999,444.76, 1,499,189.01 and 400,687.90 is: 601,040.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,444.76 : 1,499,189.01 = 400,687.90 : x
  2. Step 2: Convert to fraction form
    999,444.76/1,499,189.01 = 400,687.90/x
  3. Step 3: Cross multiply
    999,444.76x = 1,499,189.01 × 400,687.90
  4. Step 4: Simplify right side
    999,444.76x = 600,706,896,119.98
  5. Step 5: Solve for x
    x = 600,706,896,119.98/999,444.76
  6. Step 6: Final answer
    x = 601,040.62

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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.