Home / 891,086.28-1,229,300.60-528,525.42

Finding the Fourth Proportional to 891,086.28, 1,229,300.60 and 528,525.42

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Solution

The fourth proportional to 891,086.28, 1,229,300.60 and 528,525.42 is: 729,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,086.28 : 1,229,300.60 = 528,525.42 : x
  2. Step 2: Convert to fraction form
    891,086.28/1,229,300.60 = 528,525.42/x
  3. Step 3: Cross multiply
    891,086.28x = 1,229,300.60 × 528,525.42
  4. Step 4: Simplify right side
    891,086.28x = 649,716,613,278.63
  5. Step 5: Solve for x
    x = 649,716,613,278.63/891,086.28
  6. Step 6: Final answer
    x = 729,128.74

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.