Home / 709,476.45-979,098.24-387,207.21

Finding the Fourth Proportional to 709,476.45, 979,098.24 and 387,207.21

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Solution

The fourth proportional to 709,476.45, 979,098.24 and 387,207.21 is: 534,357.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,476.45 : 979,098.24 = 387,207.21 : x
  2. Step 2: Convert to fraction form
    709,476.45/979,098.24 = 387,207.21/x
  3. Step 3: Cross multiply
    709,476.45x = 979,098.24 × 387,207.21
  4. Step 4: Simplify right side
    709,476.45x = 379,113,897,826.31
  5. Step 5: Solve for x
    x = 379,113,897,826.31/709,476.45
  6. Step 6: Final answer
    x = 534,357.27

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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.