Home / 654,401.70-981,602.55-432,785.70

Finding the Fourth Proportional to 654,401.70, 981,602.55 and 432,785.70

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Solution

The fourth proportional to 654,401.70, 981,602.55 and 432,785.70 is: 649,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,401.70 : 981,602.55 = 432,785.70 : x
  2. Step 2: Convert to fraction form
    654,401.70/981,602.55 = 432,785.70/x
  3. Step 3: Cross multiply
    654,401.70x = 981,602.55 × 432,785.70
  4. Step 4: Simplify right side
    654,401.70x = 424,823,546,723.54
  5. Step 5: Solve for x
    x = 424,823,546,723.54/654,401.70
  6. Step 6: Final answer
    x = 649,178.55

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Half scale
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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.