Home / 709,834.30-979,585.20-387,545.23

Finding the Fourth Proportional to 709,834.30, 979,585.20 and 387,545.23

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Solution

The fourth proportional to 709,834.30, 979,585.20 and 387,545.23 is: 534,819.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,834.30 : 979,585.20 = 387,545.23 : x
  2. Step 2: Convert to fraction form
    709,834.30/979,585.20 = 387,545.23/x
  3. Step 3: Cross multiply
    709,834.30x = 979,585.20 × 387,545.23
  4. Step 4: Simplify right side
    709,834.30x = 379,633,571,638.60
  5. Step 5: Solve for x
    x = 379,633,571,638.60/709,834.30
  6. Step 6: Final answer
    x = 534,819.99

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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.