Home / 986,572.80-1,479,859.20-687,974.40

Finding the Fourth Proportional to 986,572.80, 1,479,859.20 and 687,974.40

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Solution

The fourth proportional to 986,572.80, 1,479,859.20 and 687,974.40 is: 1,031,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,572.80 : 1,479,859.20 = 687,974.40 : x
  2. Step 2: Convert to fraction form
    986,572.80/1,479,859.20 = 687,974.40/x
  3. Step 3: Cross multiply
    986,572.80x = 1,479,859.20 × 687,974.40
  4. Step 4: Simplify right side
    986,572.80x = 1,018,105,245,204.48
  5. Step 5: Solve for x
    x = 1,018,105,245,204.48/986,572.80
  6. Step 6: Final answer
    x = 1,031,961.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.