Home / 672,557.40-1,008,836.10-406,180.80

Finding the Fourth Proportional to 672,557.40, 1,008,836.10 and 406,180.80

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Solution

The fourth proportional to 672,557.40, 1,008,836.10 and 406,180.80 is: 609,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,557.40 : 1,008,836.10 = 406,180.80 : x
  2. Step 2: Convert to fraction form
    672,557.40/1,008,836.10 = 406,180.80/x
  3. Step 3: Cross multiply
    672,557.40x = 1,008,836.10 × 406,180.80
  4. Step 4: Simplify right side
    672,557.40x = 409,769,854,166.88
  5. Step 5: Solve for x
    x = 409,769,854,166.88/672,557.40
  6. Step 6: Final answer
    x = 609,271.20

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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.