Home / 858,734.60-1,287,713.10-326,078.60

Finding the Fourth Proportional to 858,734.60, 1,287,713.10 and 326,078.60

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Solution

The fourth proportional to 858,734.60, 1,287,713.10 and 326,078.60 is: 488,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,734.60 : 1,287,713.10 = 326,078.60 : x
  2. Step 2: Convert to fraction form
    858,734.60/1,287,713.10 = 326,078.60/x
  3. Step 3: Cross multiply
    858,734.60x = 1,287,713.10 × 326,078.60
  4. Step 4: Simplify right side
    858,734.60x = 419,895,684,849.66
  5. Step 5: Solve for x
    x = 419,895,684,849.66/858,734.60
  6. Step 6: Final answer
    x = 488,970.26

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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.