Home / 743,817.60-1,115,726.40-445,219.20

Finding the Fourth Proportional to 743,817.60, 1,115,726.40 and 445,219.20

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Solution

The fourth proportional to 743,817.60, 1,115,726.40 and 445,219.20 is: 667,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,817.60 : 1,115,726.40 = 445,219.20 : x
  2. Step 2: Convert to fraction form
    743,817.60/1,115,726.40 = 445,219.20/x
  3. Step 3: Cross multiply
    743,817.60x = 1,115,726.40 × 445,219.20
  4. Step 4: Simplify right side
    743,817.60x = 496,742,815,226.88
  5. Step 5: Solve for x
    x = 496,742,815,226.88/743,817.60
  6. Step 6: Final answer
    x = 667,828.80

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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.