Home / 459,007.40-688,511.10-449,676.20

Finding the Fourth Proportional to 459,007.40, 688,511.10 and 449,676.20

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Solution

The fourth proportional to 459,007.40, 688,511.10 and 449,676.20 is: 674,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,007.40 : 688,511.10 = 449,676.20 : x
  2. Step 2: Convert to fraction form
    459,007.40/688,511.10 = 449,676.20/x
  3. Step 3: Cross multiply
    459,007.40x = 688,511.10 × 449,676.20
  4. Step 4: Simplify right side
    459,007.40x = 309,607,055,105.82
  5. Step 5: Solve for x
    x = 309,607,055,105.82/459,007.40
  6. Step 6: Final answer
    x = 674,514.30

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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.