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Finding the Fourth Proportional to 720,131.74, 1,080,875.58 and 365,400.34

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Solution

The fourth proportional to 720,131.74, 1,080,875.58 and 365,400.34 is: 548,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,131.74 : 1,080,875.58 = 365,400.34 : x
  2. Step 2: Convert to fraction form
    720,131.74/1,080,875.58 = 365,400.34/x
  3. Step 3: Cross multiply
    720,131.74x = 1,080,875.58 × 365,400.34
  4. Step 4: Simplify right side
    720,131.74x = 394,952,304,429.70
  5. Step 5: Solve for x
    x = 394,952,304,429.70/720,131.74
  6. Step 6: Final answer
    x = 548,444.52

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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.