Home / 709,591.28-1,065,819.47-425,820.74

Finding the Fourth Proportional to 709,591.28, 1,065,819.47 and 425,820.74

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Solution

The fourth proportional to 709,591.28, 1,065,819.47 and 425,820.74 is: 639,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,591.28 : 1,065,819.47 = 425,820.74 : x
  2. Step 2: Convert to fraction form
    709,591.28/1,065,819.47 = 425,820.74/x
  3. Step 3: Cross multiply
    709,591.28x = 1,065,819.47 × 425,820.74
  4. Step 4: Simplify right side
    709,591.28x = 453,848,027,963.61
  5. Step 5: Solve for x
    x = 453,848,027,963.61/709,591.28
  6. Step 6: Final answer
    x = 639,590.77

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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.