Home / 714,198.40-985,545.57-391,929.15

Finding the Fourth Proportional to 714,198.40, 985,545.57 and 391,929.15

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Solution

The fourth proportional to 714,198.40, 985,545.57 and 391,929.15 is: 540,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,198.40 : 985,545.57 = 391,929.15 : x
  2. Step 2: Convert to fraction form
    714,198.40/985,545.57 = 391,929.15/x
  3. Step 3: Cross multiply
    714,198.40x = 985,545.57 × 391,929.15
  4. Step 4: Simplify right side
    714,198.40x = 386,264,037,536.37
  5. Step 5: Solve for x
    x = 386,264,037,536.37/714,198.40
  6. Step 6: Final answer
    x = 540,835.76

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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.