Home / 813,431.16-1,122,563.82-491,078.30

Finding the Fourth Proportional to 813,431.16, 1,122,563.82 and 491,078.30

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Solution

The fourth proportional to 813,431.16, 1,122,563.82 and 491,078.30 is: 677,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,431.16 : 1,122,563.82 = 491,078.30 : x
  2. Step 2: Convert to fraction form
    813,431.16/1,122,563.82 = 491,078.30/x
  3. Step 3: Cross multiply
    813,431.16x = 1,122,563.82 × 491,078.30
  4. Step 4: Simplify right side
    813,431.16x = 551,266,732,367.11
  5. Step 5: Solve for x
    x = 551,266,732,367.11/813,431.16
  6. Step 6: Final answer
    x = 677,705.45

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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.