Home / 781,883.30-1,078,442.62-717,560.30

Finding the Fourth Proportional to 781,883.30, 1,078,442.62 and 717,560.30

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Solution

The fourth proportional to 781,883.30, 1,078,442.62 and 717,560.30 is: 989,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,883.30 : 1,078,442.62 = 717,560.30 : x
  2. Step 2: Convert to fraction form
    781,883.30/1,078,442.62 = 717,560.30/x
  3. Step 3: Cross multiply
    781,883.30x = 1,078,442.62 × 717,560.30
  4. Step 4: Simplify right side
    781,883.30x = 773,847,609,939.99
  5. Step 5: Solve for x
    x = 773,847,609,939.99/781,883.30
  6. Step 6: Final answer
    x = 989,722.65

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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.