Home / 831,679.70-1,147,700.49-492,257.30

Finding the Fourth Proportional to 831,679.70, 1,147,700.49 and 492,257.30

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Solution

The fourth proportional to 831,679.70, 1,147,700.49 and 492,257.30 is: 679,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,679.70 : 1,147,700.49 = 492,257.30 : x
  2. Step 2: Convert to fraction form
    831,679.70/1,147,700.49 = 492,257.30/x
  3. Step 3: Cross multiply
    831,679.70x = 1,147,700.49 × 492,257.30
  4. Step 4: Simplify right side
    831,679.70x = 564,963,944,416.08
  5. Step 5: Solve for x
    x = 564,963,944,416.08/831,679.70
  6. Step 6: Final answer
    x = 679,304.72

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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.