Home / 709,734.17-979,432.74-387,444.20

Finding the Fourth Proportional to 709,734.17, 979,432.74 and 387,444.20

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Solution

The fourth proportional to 709,734.17, 979,432.74 and 387,444.20 is: 534,672.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,734.17 : 979,432.74 = 387,444.20 : x
  2. Step 2: Convert to fraction form
    709,734.17/979,432.74 = 387,444.20/x
  3. Step 3: Cross multiply
    709,734.17x = 979,432.74 × 387,444.20
  4. Step 4: Simplify right side
    709,734.17x = 379,475,529,505.94
  5. Step 5: Solve for x
    x = 379,475,529,505.94/709,734.17
  6. Step 6: Final answer
    x = 534,672.76

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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.