Home / 672,144.20-1,008,216.30-423,312.20

Finding the Fourth Proportional to 672,144.20, 1,008,216.30 and 423,312.20

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Solution

The fourth proportional to 672,144.20, 1,008,216.30 and 423,312.20 is: 634,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,144.20 : 1,008,216.30 = 423,312.20 : x
  2. Step 2: Convert to fraction form
    672,144.20/1,008,216.30 = 423,312.20/x
  3. Step 3: Cross multiply
    672,144.20x = 1,008,216.30 × 423,312.20
  4. Step 4: Simplify right side
    672,144.20x = 426,790,260,028.86
  5. Step 5: Solve for x
    x = 426,790,260,028.86/672,144.20
  6. Step 6: Final answer
    x = 634,968.30

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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.