Home / 719,140.20-1,079,099.10-319,842.60

Finding the Fourth Proportional to 719,140.20, 1,079,099.10 and 319,842.60

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Solution

The fourth proportional to 719,140.20, 1,079,099.10 and 319,842.60 is: 479,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,140.20 : 1,079,099.10 = 319,842.60 : x
  2. Step 2: Convert to fraction form
    719,140.20/1,079,099.10 = 319,842.60/x
  3. Step 3: Cross multiply
    719,140.20x = 1,079,099.10 × 319,842.60
  4. Step 4: Simplify right side
    719,140.20x = 345,141,861,801.66
  5. Step 5: Solve for x
    x = 345,141,861,801.66/719,140.20
  6. Step 6: Final answer
    x = 479,936.82

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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.