Home / 680,213.76-1,018,915.20-398,883.84

Finding the Fourth Proportional to 680,213.76, 1,018,915.20 and 398,883.84

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Solution

The fourth proportional to 680,213.76, 1,018,915.20 and 398,883.84 is: 597,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,213.76 : 1,018,915.20 = 398,883.84 : x
  2. Step 2: Convert to fraction form
    680,213.76/1,018,915.20 = 398,883.84/x
  3. Step 3: Cross multiply
    680,213.76x = 1,018,915.20 × 398,883.84
  4. Step 4: Simplify right side
    680,213.76x = 406,428,807,610.37
  5. Step 5: Solve for x
    x = 406,428,807,610.37/680,213.76
  6. Step 6: Final answer
    x = 597,501.60

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1.5x scale

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.