Home / 681,895.76-940,670.28-520,470.56

Finding the Fourth Proportional to 681,895.76, 940,670.28 and 520,470.56

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Solution

The fourth proportional to 681,895.76, 940,670.28 and 520,470.56 is: 717,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,895.76 : 940,670.28 = 520,470.56 : x
  2. Step 2: Convert to fraction form
    681,895.76/940,670.28 = 520,470.56/x
  3. Step 3: Cross multiply
    681,895.76x = 940,670.28 × 520,470.56
  4. Step 4: Simplify right side
    681,895.76x = 489,591,187,406.96
  5. Step 5: Solve for x
    x = 489,591,187,406.96/681,895.76
  6. Step 6: Final answer
    x = 717,985.38

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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.