Home / 728,000.70-1,092,001.05-462,936.30

Finding the Fourth Proportional to 728,000.70, 1,092,001.05 and 462,936.30

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Solution

The fourth proportional to 728,000.70, 1,092,001.05 and 462,936.30 is: 694,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,000.70 : 1,092,001.05 = 462,936.30 : x
  2. Step 2: Convert to fraction form
    728,000.70/1,092,001.05 = 462,936.30/x
  3. Step 3: Cross multiply
    728,000.70x = 1,092,001.05 × 462,936.30
  4. Step 4: Simplify right side
    728,000.70x = 505,526,925,683.12
  5. Step 5: Solve for x
    x = 505,526,925,683.12/728,000.70
  6. Step 6: Final answer
    x = 694,404.45

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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.