Home / 719,027.20-1,078,929.60-319,729.60

Finding the Fourth Proportional to 719,027.20, 1,078,929.60 and 319,729.60

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Solution

The fourth proportional to 719,027.20, 1,078,929.60 and 319,729.60 is: 479,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,027.20 : 1,078,929.60 = 319,729.60 : x
  2. Step 2: Convert to fraction form
    719,027.20/1,078,929.60 = 319,729.60/x
  3. Step 3: Cross multiply
    719,027.20x = 1,078,929.60 × 319,729.60
  4. Step 4: Simplify right side
    719,027.20x = 344,965,729,436.16
  5. Step 5: Solve for x
    x = 344,965,729,436.16/719,027.20
  6. Step 6: Final answer
    x = 479,767.29

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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.