Home / 653,919.40-981,024.90-512,201.80

Finding the Fourth Proportional to 653,919.40, 981,024.90 and 512,201.80

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Solution

The fourth proportional to 653,919.40, 981,024.90 and 512,201.80 is: 768,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,919.40 : 981,024.90 = 512,201.80 : x
  2. Step 2: Convert to fraction form
    653,919.40/981,024.90 = 512,201.80/x
  3. Step 3: Cross multiply
    653,919.40x = 981,024.90 × 512,201.80
  4. Step 4: Simplify right side
    653,919.40x = 502,482,719,624.82
  5. Step 5: Solve for x
    x = 502,482,719,624.82/653,919.40
  6. Step 6: Final answer
    x = 768,416.90

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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.