Home / 709,414.39-979,012.54-387,145.24

Finding the Fourth Proportional to 709,414.39, 979,012.54 and 387,145.24

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Solution

The fourth proportional to 709,414.39, 979,012.54 and 387,145.24 is: 534,271.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,414.39 : 979,012.54 = 387,145.24 : x
  2. Step 2: Convert to fraction form
    709,414.39/979,012.54 = 387,145.24/x
  3. Step 3: Cross multiply
    709,414.39x = 979,012.54 × 387,145.24
  4. Step 4: Simplify right side
    709,414.39x = 379,020,044,761.31
  5. Step 5: Solve for x
    x = 379,020,044,761.31/709,414.39
  6. Step 6: Final answer
    x = 534,271.72

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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.