Home / 712,280.80-1,068,021.82-487,894.60

Finding the Fourth Proportional to 712,280.80, 1,068,021.82 and 487,894.60

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Solution

The fourth proportional to 712,280.80, 1,068,021.82 and 487,894.60 is: 731,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,280.80 : 1,068,021.82 = 487,894.60 : x
  2. Step 2: Convert to fraction form
    712,280.80/1,068,021.82 = 487,894.60/x
  3. Step 3: Cross multiply
    712,280.80x = 1,068,021.82 × 487,894.60
  4. Step 4: Simplify right side
    712,280.80x = 521,082,078,660.17
  5. Step 5: Solve for x
    x = 521,082,078,660.17/712,280.80
  6. Step 6: Final answer
    x = 731,568.33

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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.