Home / 827,449.40-1,142,028.78-487,897.40

Finding the Fourth Proportional to 827,449.40, 1,142,028.78 and 487,897.40

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Solution

The fourth proportional to 827,449.40, 1,142,028.78 and 487,897.40 is: 673,386.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,449.40 : 1,142,028.78 = 487,897.40 : x
  2. Step 2: Convert to fraction form
    827,449.40/1,142,028.78 = 487,897.40/x
  3. Step 3: Cross multiply
    827,449.40x = 1,142,028.78 × 487,897.40
  4. Step 4: Simplify right side
    827,449.40x = 557,192,872,487.17
  5. Step 5: Solve for x
    x = 557,192,872,487.17/827,449.40
  6. Step 6: Final answer
    x = 673,386.04

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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.