Home / 862,081.13-1,189,708.86-480,107.91

Finding the Fourth Proportional to 862,081.13, 1,189,708.86 and 480,107.91

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Solution

The fourth proportional to 862,081.13, 1,189,708.86 and 480,107.91 is: 662,569.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,081.13 : 1,189,708.86 = 480,107.91 : x
  2. Step 2: Convert to fraction form
    862,081.13/1,189,708.86 = 480,107.91/x
  3. Step 3: Cross multiply
    862,081.13x = 1,189,708.86 × 480,107.91
  4. Step 4: Simplify right side
    862,081.13x = 571,188,633,852.78
  5. Step 5: Solve for x
    x = 571,188,633,852.78/862,081.13
  6. Step 6: Final answer
    x = 662,569.47

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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.