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Finding the Fourth Proportional to 442,980.60, 664,470.90 and 440,356.20

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Solution

The fourth proportional to 442,980.60, 664,470.90 and 440,356.20 is: 660,534.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,980.60 : 664,470.90 = 440,356.20 : x
  2. Step 2: Convert to fraction form
    442,980.60/664,470.90 = 440,356.20/x
  3. Step 3: Cross multiply
    442,980.60x = 664,470.90 × 440,356.20
  4. Step 4: Simplify right side
    442,980.60x = 292,603,880,534.58
  5. Step 5: Solve for x
    x = 292,603,880,534.58/442,980.60
  6. Step 6: Final answer
    x = 660,534.30

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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.