Home / 766,352.80-1,149,529.20-434,576.80

Finding the Fourth Proportional to 766,352.80, 1,149,529.20 and 434,576.80

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Solution

The fourth proportional to 766,352.80, 1,149,529.20 and 434,576.80 is: 651,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,352.80 : 1,149,529.20 = 434,576.80 : x
  2. Step 2: Convert to fraction form
    766,352.80/1,149,529.20 = 434,576.80/x
  3. Step 3: Cross multiply
    766,352.80x = 1,149,529.20 × 434,576.80
  4. Step 4: Simplify right side
    766,352.80x = 499,558,721,242.56
  5. Step 5: Solve for x
    x = 499,558,721,242.56/766,352.80
  6. Step 6: Final answer
    x = 651,865.20

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Double scale
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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.