Home / 709,414.38-979,012.67-387,145.26

Finding the Fourth Proportional to 709,414.38, 979,012.67 and 387,145.26

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Solution

The fourth proportional to 709,414.38, 979,012.67 and 387,145.26 is: 534,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,414.38 : 979,012.67 = 387,145.26 : x
  2. Step 2: Convert to fraction form
    709,414.38/979,012.67 = 387,145.26/x
  3. Step 3: Cross multiply
    709,414.38x = 979,012.67 × 387,145.26
  4. Step 4: Simplify right side
    709,414.38x = 379,020,112,734.72
  5. Step 5: Solve for x
    x = 379,020,112,734.72/709,414.38
  6. Step 6: Final answer
    x = 534,271.82

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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.