Home / 567,015.07-781,404.18-405,589.85

Finding the Fourth Proportional to 567,015.07, 781,404.18 and 405,589.85

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Solution

The fourth proportional to 567,015.07, 781,404.18 and 405,589.85 is: 558,943.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,015.07 : 781,404.18 = 405,589.85 : x
  2. Step 2: Convert to fraction form
    567,015.07/781,404.18 = 405,589.85/x
  3. Step 3: Cross multiply
    567,015.07x = 781,404.18 × 405,589.85
  4. Step 4: Simplify right side
    567,015.07x = 316,929,604,155.57
  5. Step 5: Solve for x
    x = 316,929,604,155.57/567,015.07
  6. Step 6: Final answer
    x = 558,943.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.