Home / 726,145.21-1,089,374.51-220,746.89

Finding the Fourth Proportional to 726,145.21, 1,089,374.51 and 220,746.89

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Solution

The fourth proportional to 726,145.21, 1,089,374.51 and 220,746.89 is: 331,167.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,145.21 : 1,089,374.51 = 220,746.89 : x
  2. Step 2: Convert to fraction form
    726,145.21/1,089,374.51 = 220,746.89/x
  3. Step 3: Cross multiply
    726,145.21x = 1,089,374.51 × 220,746.89
  4. Step 4: Simplify right side
    726,145.21x = 240,476,035,127.77
  5. Step 5: Solve for x
    x = 240,476,035,127.77/726,145.21
  6. Step 6: Final answer
    x = 331,167.97

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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.