Home / 769,439.55-1,154,159.33-415,145.55

Finding the Fourth Proportional to 769,439.55, 1,154,159.33 and 415,145.55

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Solution

The fourth proportional to 769,439.55, 1,154,159.33 and 415,145.55 is: 622,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,439.55 : 1,154,159.33 = 415,145.55 : x
  2. Step 2: Convert to fraction form
    769,439.55/1,154,159.33 = 415,145.55/x
  3. Step 3: Cross multiply
    769,439.55x = 1,154,159.33 × 415,145.55
  4. Step 4: Simplify right side
    769,439.55x = 479,144,107,764.75
  5. Step 5: Solve for x
    x = 479,144,107,764.75/769,439.55
  6. Step 6: Final answer
    x = 622,718.33

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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.