Home / 862,114.78-1,189,718.49-480,141.55

Finding the Fourth Proportional to 862,114.78, 1,189,718.49 and 480,141.55

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Solution

The fourth proportional to 862,114.78, 1,189,718.49 and 480,141.55 is: 662,595.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,114.78 : 1,189,718.49 = 480,141.55 : x
  2. Step 2: Convert to fraction form
    862,114.78/1,189,718.49 = 480,141.55/x
  3. Step 3: Cross multiply
    862,114.78x = 1,189,718.49 × 480,141.55
  4. Step 4: Simplify right side
    862,114.78x = 571,233,279,852.26
  5. Step 5: Solve for x
    x = 571,233,279,852.26/862,114.78
  6. Step 6: Final answer
    x = 662,595.39

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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.