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Finding the Fourth Proportional to 440,288.40, 660,432.60 and 365,557.80

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Solution

The fourth proportional to 440,288.40, 660,432.60 and 365,557.80 is: 548,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,288.40 : 660,432.60 = 365,557.80 : x
  2. Step 2: Convert to fraction form
    440,288.40/660,432.60 = 365,557.80/x
  3. Step 3: Cross multiply
    440,288.40x = 660,432.60 × 365,557.80
  4. Step 4: Simplify right side
    440,288.40x = 241,426,288,304.28
  5. Step 5: Solve for x
    x = 241,426,288,304.28/440,288.40
  6. Step 6: Final answer
    x = 548,336.70

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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.