Home / 804,928.45-1,207,392.68-431,680.45

Finding the Fourth Proportional to 804,928.45, 1,207,392.68 and 431,680.45

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Solution

The fourth proportional to 804,928.45, 1,207,392.68 and 431,680.45 is: 647,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,928.45 : 1,207,392.68 = 431,680.45 : x
  2. Step 2: Convert to fraction form
    804,928.45/1,207,392.68 = 431,680.45/x
  3. Step 3: Cross multiply
    804,928.45x = 1,207,392.68 × 431,680.45
  4. Step 4: Simplify right side
    804,928.45x = 521,207,815,429.11
  5. Step 5: Solve for x
    x = 521,207,815,429.11/804,928.45
  6. Step 6: Final answer
    x = 647,520.68

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Double scale
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Similar ratio
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1.5x scale

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.