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Finding the Fourth Proportional to 487,261.80, 730,892.70 and 443,716.20

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Solution

The fourth proportional to 487,261.80, 730,892.70 and 443,716.20 is: 665,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,261.80 : 730,892.70 = 443,716.20 : x
  2. Step 2: Convert to fraction form
    487,261.80/730,892.70 = 443,716.20/x
  3. Step 3: Cross multiply
    487,261.80x = 730,892.70 × 443,716.20
  4. Step 4: Simplify right side
    487,261.80x = 324,308,931,451.74
  5. Step 5: Solve for x
    x = 324,308,931,451.74/487,261.80
  6. Step 6: Final answer
    x = 665,574.30

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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.