Home / 812,589.85-1,121,001.78-526,202.20

Finding the Fourth Proportional to 812,589.85, 1,121,001.78 and 526,202.20

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Solution

The fourth proportional to 812,589.85, 1,121,001.78 and 526,202.20 is: 725,918.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,589.85 : 1,121,001.78 = 526,202.20 : x
  2. Step 2: Convert to fraction form
    812,589.85/1,121,001.78 = 526,202.20/x
  3. Step 3: Cross multiply
    812,589.85x = 1,121,001.78 × 526,202.20
  4. Step 4: Simplify right side
    812,589.85x = 589,873,602,839.92
  5. Step 5: Solve for x
    x = 589,873,602,839.92/812,589.85
  6. Step 6: Final answer
    x = 725,918.01

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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.