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Finding the Fourth Proportional to 754,134.40, 1,129,687.03 and 348,758.40

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Solution

The fourth proportional to 754,134.40, 1,129,687.03 and 348,758.40 is: 522,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,134.40 : 1,129,687.03 = 348,758.40 : x
  2. Step 2: Convert to fraction form
    754,134.40/1,129,687.03 = 348,758.40/x
  3. Step 3: Cross multiply
    754,134.40x = 1,129,687.03 × 348,758.40
  4. Step 4: Simplify right side
    754,134.40x = 393,987,839,339.76
  5. Step 5: Solve for x
    x = 393,987,839,339.76/754,134.40
  6. Step 6: Final answer
    x = 522,437.17

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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.