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Finding the Fourth Proportional to 654,152.80, 981,229.20 and 654,152.80

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Solution

The fourth proportional to 654,152.80, 981,229.20 and 654,152.80 is: 981,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,152.80 : 981,229.20 = 654,152.80 : x
  2. Step 2: Convert to fraction form
    654,152.80/981,229.20 = 654,152.80/x
  3. Step 3: Cross multiply
    654,152.80x = 981,229.20 × 654,152.80
  4. Step 4: Simplify right side
    654,152.80x = 641,873,828,621.76
  5. Step 5: Solve for x
    x = 641,873,828,621.76/654,152.80
  6. Step 6: Final answer
    x = 981,229.20

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Half scale
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Double scale
Find fourth proportional to 654,153.80, 981,230.70 and 654,153.80
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.