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Finding the Fourth Proportional to 440,513.10, 660,769.65 and 124,980.30

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Solution

The fourth proportional to 440,513.10, 660,769.65 and 124,980.30 is: 187,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,513.10 : 660,769.65 = 124,980.30 : x
  2. Step 2: Convert to fraction form
    440,513.10/660,769.65 = 124,980.30/x
  3. Step 3: Cross multiply
    440,513.10x = 660,769.65 × 124,980.30
  4. Step 4: Simplify right side
    440,513.10x = 82,583,189,087.90
  5. Step 5: Solve for x
    x = 82,583,189,087.90/440,513.10
  6. Step 6: Final answer
    x = 187,470.45

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1.5x scale

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.