Home / 728,117.90-1,092,176.85-657,259.10

Finding the Fourth Proportional to 728,117.90, 1,092,176.85 and 657,259.10

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Solution

The fourth proportional to 728,117.90, 1,092,176.85 and 657,259.10 is: 985,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.90 : 1,092,176.85 = 657,259.10 : x
  2. Step 2: Convert to fraction form
    728,117.90/1,092,176.85 = 657,259.10/x
  3. Step 3: Cross multiply
    728,117.90x = 1,092,176.85 × 657,259.10
  4. Step 4: Simplify right side
    728,117.90x = 717,843,173,471.84
  5. Step 5: Solve for x
    x = 717,843,173,471.84/728,117.90
  6. Step 6: Final answer
    x = 985,888.65

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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.