Home / 739,830.30-1,020,856.34-449,290.78

Finding the Fourth Proportional to 739,830.30, 1,020,856.34 and 449,290.78

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Solution

The fourth proportional to 739,830.30, 1,020,856.34 and 449,290.78 is: 619,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,830.30 : 1,020,856.34 = 449,290.78 : x
  2. Step 2: Convert to fraction form
    739,830.30/1,020,856.34 = 449,290.78/x
  3. Step 3: Cross multiply
    739,830.30x = 1,020,856.34 × 449,290.78
  4. Step 4: Simplify right side
    739,830.30x = 458,661,341,266.55
  5. Step 5: Solve for x
    x = 458,661,341,266.55/739,830.30
  6. Step 6: Final answer
    x = 619,954.79

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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.