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Finding the Fourth Proportional to 440,900.31, 660,228.69 and 290,684.85

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Solution

The fourth proportional to 440,900.31, 660,228.69 and 290,684.85 is: 435,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,900.31 : 660,228.69 = 290,684.85 : x
  2. Step 2: Convert to fraction form
    440,900.31/660,228.69 = 290,684.85/x
  3. Step 3: Cross multiply
    440,900.31x = 660,228.69 × 290,684.85
  4. Step 4: Simplify right side
    440,900.31x = 191,918,472,963.78
  5. Step 5: Solve for x
    x = 191,918,472,963.78/440,900.31
  6. Step 6: Final answer
    x = 435,287.68

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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.