Home / 457,207.20-685,810.80-120,247.20

Finding the Fourth Proportional to 457,207.20, 685,810.80 and 120,247.20

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Solution

The fourth proportional to 457,207.20, 685,810.80 and 120,247.20 is: 180,370.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,207.20 : 685,810.80 = 120,247.20 : x
  2. Step 2: Convert to fraction form
    457,207.20/685,810.80 = 120,247.20/x
  3. Step 3: Cross multiply
    457,207.20x = 685,810.80 × 120,247.20
  4. Step 4: Simplify right side
    457,207.20x = 82,466,828,429.76
  5. Step 5: Solve for x
    x = 82,466,828,429.76/457,207.20
  6. Step 6: Final answer
    x = 180,370.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.