Home / 457,828.80-686,743.20-434,500.80

Finding the Fourth Proportional to 457,828.80, 686,743.20 and 434,500.80

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Solution

The fourth proportional to 457,828.80, 686,743.20 and 434,500.80 is: 651,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,828.80 : 686,743.20 = 434,500.80 : x
  2. Step 2: Convert to fraction form
    457,828.80/686,743.20 = 434,500.80/x
  3. Step 3: Cross multiply
    457,828.80x = 686,743.20 × 434,500.80
  4. Step 4: Simplify right side
    457,828.80x = 298,390,469,794.56
  5. Step 5: Solve for x
    x = 298,390,469,794.56/457,828.80
  6. Step 6: Final answer
    x = 651,751.20

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Similar ratio
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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.