Home / 709,474.94-979,096.17-387,205.71

Finding the Fourth Proportional to 709,474.94, 979,096.17 and 387,205.71

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Solution

The fourth proportional to 709,474.94, 979,096.17 and 387,205.71 is: 534,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,474.94 : 979,096.17 = 387,205.71 : x
  2. Step 2: Convert to fraction form
    709,474.94/979,096.17 = 387,205.71/x
  3. Step 3: Cross multiply
    709,474.94x = 979,096.17 × 387,205.71
  4. Step 4: Simplify right side
    709,474.94x = 379,111,627,663.13
  5. Step 5: Solve for x
    x = 379,111,627,663.13/709,474.94
  6. Step 6: Final answer
    x = 534,355.21

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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.