Home / 728,101.90-1,092,152.85-657,243.10

Finding the Fourth Proportional to 728,101.90, 1,092,152.85 and 657,243.10

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Solution

The fourth proportional to 728,101.90, 1,092,152.85 and 657,243.10 is: 985,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,101.90 : 1,092,152.85 = 657,243.10 : x
  2. Step 2: Convert to fraction form
    728,101.90/1,092,152.85 = 657,243.10/x
  3. Step 3: Cross multiply
    728,101.90x = 1,092,152.85 × 657,243.10
  4. Step 4: Simplify right side
    728,101.90x = 717,809,924,807.84
  5. Step 5: Solve for x
    x = 717,809,924,807.84/728,101.90
  6. Step 6: Final answer
    x = 985,864.65

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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.