Home / 868,315.32-1,198,320.30-486,319.80

Finding the Fourth Proportional to 868,315.32, 1,198,320.30 and 486,319.80

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Solution

The fourth proportional to 868,315.32, 1,198,320.30 and 486,319.80 is: 671,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,315.32 : 1,198,320.30 = 486,319.80 : x
  2. Step 2: Convert to fraction form
    868,315.32/1,198,320.30 = 486,319.80/x
  3. Step 3: Cross multiply
    868,315.32x = 1,198,320.30 × 486,319.80
  4. Step 4: Simplify right side
    868,315.32x = 582,766,888,631.94
  5. Step 5: Solve for x
    x = 582,766,888,631.94/868,315.32
  6. Step 6: Final answer
    x = 671,146.62

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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.