Home / 709,414.62-979,013.07-387,145.59

Finding the Fourth Proportional to 709,414.62, 979,013.07 and 387,145.59

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Solution

The fourth proportional to 709,414.62, 979,013.07 and 387,145.59 is: 534,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,414.62 : 979,013.07 = 387,145.59 : x
  2. Step 2: Convert to fraction form
    709,414.62/979,013.07 = 387,145.59/x
  3. Step 3: Cross multiply
    709,414.62x = 979,013.07 × 387,145.59
  4. Step 4: Simplify right side
    709,414.62x = 379,020,592,602.86
  5. Step 5: Solve for x
    x = 379,020,592,602.86/709,414.62
  6. Step 6: Final answer
    x = 534,272.32

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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.