Home / 769,390.30-1,154,085.45-415,096.30

Finding the Fourth Proportional to 769,390.30, 1,154,085.45 and 415,096.30

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Solution

The fourth proportional to 769,390.30, 1,154,085.45 and 415,096.30 is: 622,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,390.30 : 1,154,085.45 = 415,096.30 : x
  2. Step 2: Convert to fraction form
    769,390.30/1,154,085.45 = 415,096.30/x
  3. Step 3: Cross multiply
    769,390.30x = 1,154,085.45 × 415,096.30
  4. Step 4: Simplify right side
    769,390.30x = 479,056,600,178.84
  5. Step 5: Solve for x
    x = 479,056,600,178.84/769,390.30
  6. Step 6: Final answer
    x = 622,644.45

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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.