Home / 862,105.15-1,189,742.12-480,131.93

Finding the Fourth Proportional to 862,105.15, 1,189,742.12 and 480,131.93

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Solution

The fourth proportional to 862,105.15, 1,189,742.12 and 480,131.93 is: 662,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,105.15 : 1,189,742.12 = 480,131.93 : x
  2. Step 2: Convert to fraction form
    862,105.15/1,189,742.12 = 480,131.93/x
  3. Step 3: Cross multiply
    862,105.15x = 1,189,742.12 × 480,131.93
  4. Step 4: Simplify right side
    862,105.15x = 571,233,182,006.67
  5. Step 5: Solve for x
    x = 571,233,182,006.67/862,105.15
  6. Step 6: Final answer
    x = 662,602.68

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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.