Home / 521,962.13-782,943.20-127,978.13

Finding the Fourth Proportional to 521,962.13, 782,943.20 and 127,978.13

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Solution

The fourth proportional to 521,962.13, 782,943.20 and 127,978.13 is: 191,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,962.13 : 782,943.20 = 127,978.13 : x
  2. Step 2: Convert to fraction form
    521,962.13/782,943.20 = 127,978.13/x
  3. Step 3: Cross multiply
    521,962.13x = 782,943.20 × 127,978.13
  4. Step 4: Simplify right side
    521,962.13x = 100,199,606,632.22
  5. Step 5: Solve for x
    x = 100,199,606,632.22/521,962.13
  6. Step 6: Final answer
    x = 191,967.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.