Home / 891,073.78-1,229,283.34-528,512.92

Finding the Fourth Proportional to 891,073.78, 1,229,283.34 and 528,512.92

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Solution

The fourth proportional to 891,073.78, 1,229,283.34 and 528,512.92 is: 729,111.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,073.78 : 1,229,283.34 = 528,512.92 : x
  2. Step 2: Convert to fraction form
    891,073.78/1,229,283.34 = 528,512.92/x
  3. Step 3: Cross multiply
    891,073.78x = 1,229,283.34 × 528,512.92
  4. Step 4: Simplify right side
    891,073.78x = 649,692,127,530.75
  5. Step 5: Solve for x
    x = 649,692,127,530.75/891,073.78
  6. Step 6: Final answer
    x = 729,111.49

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Half scale
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Double scale
Find fourth proportional to 891,074.78, 1,229,284.72 and 528,513.92
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.