Home / 862,134.72-1,189,782.60-480,161.49

Finding the Fourth Proportional to 862,134.72, 1,189,782.60 and 480,161.49

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Solution

The fourth proportional to 862,134.72, 1,189,782.60 and 480,161.49 is: 662,643.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,134.72 : 1,189,782.60 = 480,161.49 : x
  2. Step 2: Convert to fraction form
    862,134.72/1,189,782.60 = 480,161.49/x
  3. Step 3: Cross multiply
    862,134.72x = 1,189,782.60 × 480,161.49
  4. Step 4: Simplify right side
    862,134.72x = 571,287,785,992.07
  5. Step 5: Solve for x
    x = 571,287,785,992.07/862,134.72
  6. Step 6: Final answer
    x = 662,643.29

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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.