Home / 820,422.25-1,132,176.15-476,290.12

Finding the Fourth Proportional to 820,422.25, 1,132,176.15 and 476,290.12

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Solution

The fourth proportional to 820,422.25, 1,132,176.15 and 476,290.12 is: 657,276.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,422.25 : 1,132,176.15 = 476,290.12 : x
  2. Step 2: Convert to fraction form
    820,422.25/1,132,176.15 = 476,290.12/x
  3. Step 3: Cross multiply
    820,422.25x = 1,132,176.15 × 476,290.12
  4. Step 4: Simplify right side
    820,422.25x = 539,244,314,344.64
  5. Step 5: Solve for x
    x = 539,244,314,344.64/820,422.25
  6. Step 6: Final answer
    x = 657,276.56

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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.