Home / 872,885.80-1,309,328.70-281,909.80

Finding the Fourth Proportional to 872,885.80, 1,309,328.70 and 281,909.80

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Solution

The fourth proportional to 872,885.80, 1,309,328.70 and 281,909.80 is: 422,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,885.80 : 1,309,328.70 = 281,909.80 : x
  2. Step 2: Convert to fraction form
    872,885.80/1,309,328.70 = 281,909.80/x
  3. Step 3: Cross multiply
    872,885.80x = 1,309,328.70 × 281,909.80
  4. Step 4: Simplify right side
    872,885.80x = 369,112,591,951.26
  5. Step 5: Solve for x
    x = 369,112,591,951.26/872,885.80
  6. Step 6: Final answer
    x = 422,864.70

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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.