Home / 659,723.49-989,587.68-280,590.03

Finding the Fourth Proportional to 659,723.49, 989,587.68 and 280,590.03

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Solution

The fourth proportional to 659,723.49, 989,587.68 and 280,590.03 is: 420,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,723.49 : 989,587.68 = 280,590.03 : x
  2. Step 2: Convert to fraction form
    659,723.49/989,587.68 = 280,590.03/x
  3. Step 3: Cross multiply
    659,723.49x = 989,587.68 × 280,590.03
  4. Step 4: Simplify right side
    659,723.49x = 277,668,436,818.83
  5. Step 5: Solve for x
    x = 277,668,436,818.83/659,723.49
  6. Step 6: Final answer
    x = 420,886.08

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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.