Home / 804,941.70-1,207,412.55-431,693.70

Finding the Fourth Proportional to 804,941.70, 1,207,412.55 and 431,693.70

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Solution

The fourth proportional to 804,941.70, 1,207,412.55 and 431,693.70 is: 647,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,941.70 : 1,207,412.55 = 431,693.70 : x
  2. Step 2: Convert to fraction form
    804,941.70/1,207,412.55 = 431,693.70/x
  3. Step 3: Cross multiply
    804,941.70x = 1,207,412.55 × 431,693.70
  4. Step 4: Simplify right side
    804,941.70x = 521,232,391,135.94
  5. Step 5: Solve for x
    x = 521,232,391,135.94/804,941.70
  6. Step 6: Final answer
    x = 647,540.55

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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.