Home / 858,374.10-1,287,561.15-259,427.70

Finding the Fourth Proportional to 858,374.10, 1,287,561.15 and 259,427.70

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Solution

The fourth proportional to 858,374.10, 1,287,561.15 and 259,427.70 is: 389,141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,374.10 : 1,287,561.15 = 259,427.70 : x
  2. Step 2: Convert to fraction form
    858,374.10/1,287,561.15 = 259,427.70/x
  3. Step 3: Cross multiply
    858,374.10x = 1,287,561.15 × 259,427.70
  4. Step 4: Simplify right side
    858,374.10x = 334,029,027,753.86
  5. Step 5: Solve for x
    x = 334,029,027,753.86/858,374.10
  6. Step 6: Final answer
    x = 389,141.55

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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.