Home / 891,072.78-1,229,281.97-528,511.92

Finding the Fourth Proportional to 891,072.78, 1,229,281.97 and 528,511.92

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Solution

The fourth proportional to 891,072.78, 1,229,281.97 and 528,511.92 is: 729,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,072.78 : 1,229,281.97 = 528,511.92 : x
  2. Step 2: Convert to fraction form
    891,072.78/1,229,281.97 = 528,511.92/x
  3. Step 3: Cross multiply
    891,072.78x = 1,229,281.97 × 528,511.92
  4. Step 4: Simplify right side
    891,072.78x = 649,690,171,543.52
  5. Step 5: Solve for x
    x = 649,690,171,543.52/891,072.78
  6. Step 6: Final answer
    x = 729,110.11

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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.