Home / 891,489.60-1,229,956.44-509,245.74

Finding the Fourth Proportional to 891,489.60, 1,229,956.44 and 509,245.74

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Solution

The fourth proportional to 891,489.60, 1,229,956.44 and 509,245.74 is: 702,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,489.60 : 1,229,956.44 = 509,245.74 : x
  2. Step 2: Convert to fraction form
    891,489.60/1,229,956.44 = 509,245.74/x
  3. Step 3: Cross multiply
    891,489.60x = 1,229,956.44 × 509,245.74
  4. Step 4: Simplify right side
    891,489.60x = 626,350,077,455.57
  5. Step 5: Solve for x
    x = 626,350,077,455.57/891,489.60
  6. Step 6: Final answer
    x = 702,588.20

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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.