Home / 457,904.52-686,812.98-280,320.12

Finding the Fourth Proportional to 457,904.52, 686,812.98 and 280,320.12

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Solution

The fourth proportional to 457,904.52, 686,812.98 and 280,320.12 is: 420,453.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,904.52 : 686,812.98 = 280,320.12 : x
  2. Step 2: Convert to fraction form
    457,904.52/686,812.98 = 280,320.12/x
  3. Step 3: Cross multiply
    457,904.52x = 686,812.98 × 280,320.12
  4. Step 4: Simplify right side
    457,904.52x = 192,527,496,971.16
  5. Step 5: Solve for x
    x = 192,527,496,971.16/457,904.52
  6. Step 6: Final answer
    x = 420,453.37

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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.