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Finding the Fourth Proportional to 856,989.60, 1,284,609.60 and 501,820.80

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Solution

The fourth proportional to 856,989.60, 1,284,609.60 and 501,820.80 is: 752,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,989.60 : 1,284,609.60 = 501,820.80 : x
  2. Step 2: Convert to fraction form
    856,989.60/1,284,609.60 = 501,820.80/x
  3. Step 3: Cross multiply
    856,989.60x = 1,284,609.60 × 501,820.80
  4. Step 4: Simplify right side
    856,989.60x = 644,643,817,159.68
  5. Step 5: Solve for x
    x = 644,643,817,159.68/856,989.60
  6. Step 6: Final answer
    x = 752,218.95

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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.