Home / 769,043.28-1,061,247.60-442,331.45

Finding the Fourth Proportional to 769,043.28, 1,061,247.60 and 442,331.45

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Solution

The fourth proportional to 769,043.28, 1,061,247.60 and 442,331.45 is: 610,398.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,043.28 : 1,061,247.60 = 442,331.45 : x
  2. Step 2: Convert to fraction form
    769,043.28/1,061,247.60 = 442,331.45/x
  3. Step 3: Cross multiply
    769,043.28x = 1,061,247.60 × 442,331.45
  4. Step 4: Simplify right side
    769,043.28x = 469,423,184,410.78
  5. Step 5: Solve for x
    x = 469,423,184,410.78/769,043.28
  6. Step 6: Final answer
    x = 610,398.92

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.