Home / 659,720.49-989,583.18-280,587.03

Finding the Fourth Proportional to 659,720.49, 989,583.18 and 280,587.03

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Solution

The fourth proportional to 659,720.49, 989,583.18 and 280,587.03 is: 420,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,720.49 : 989,583.18 = 280,587.03 : x
  2. Step 2: Convert to fraction form
    659,720.49/989,583.18 = 280,587.03/x
  3. Step 3: Cross multiply
    659,720.49x = 989,583.18 × 280,587.03
  4. Step 4: Simplify right side
    659,720.49x = 277,664,205,414.16
  5. Step 5: Solve for x
    x = 277,664,205,414.16/659,720.49
  6. Step 6: Final answer
    x = 420,881.58

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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.