Home / 862,113.78-1,189,717.11-480,140.55

Finding the Fourth Proportional to 862,113.78, 1,189,717.11 and 480,140.55

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Solution

The fourth proportional to 862,113.78, 1,189,717.11 and 480,140.55 is: 662,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,113.78 : 1,189,717.11 = 480,140.55 : x
  2. Step 2: Convert to fraction form
    862,113.78/1,189,717.11 = 480,140.55/x
  3. Step 3: Cross multiply
    862,113.78x = 1,189,717.11 × 480,140.55
  4. Step 4: Simplify right side
    862,113.78x = 571,231,427,539.81
  5. Step 5: Solve for x
    x = 571,231,427,539.81/862,113.78
  6. Step 6: Final answer
    x = 662,594.01

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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.