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Finding the Fourth Proportional to 661,502.10, 991,232.55 and 492,228.30

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Solution

The fourth proportional to 661,502.10, 991,232.55 and 492,228.30 is: 737,583.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,502.10 : 991,232.55 = 492,228.30 : x
  2. Step 2: Convert to fraction form
    661,502.10/991,232.55 = 492,228.30/x
  3. Step 3: Cross multiply
    661,502.10x = 991,232.55 × 492,228.30
  4. Step 4: Simplify right side
    661,502.10x = 487,912,712,991.17
  5. Step 5: Solve for x
    x = 487,912,712,991.17/661,502.10
  6. Step 6: Final answer
    x = 737,583.01

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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.