Home / 769,112.28-1,061,342.10-442,400.40

Finding the Fourth Proportional to 769,112.28, 1,061,342.10 and 442,400.40

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Solution

The fourth proportional to 769,112.28, 1,061,342.10 and 442,400.40 is: 610,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,112.28 : 1,061,342.10 = 442,400.40 : x
  2. Step 2: Convert to fraction form
    769,112.28/1,061,342.10 = 442,400.40/x
  3. Step 3: Cross multiply
    769,112.28x = 1,061,342.10 × 442,400.40
  4. Step 4: Simplify right side
    769,112.28x = 469,538,169,576.84
  5. Step 5: Solve for x
    x = 469,538,169,576.84/769,112.28
  6. Step 6: Final answer
    x = 610,493.66

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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.