Home / 876,821.80-1,315,232.70-577,640.20

Finding the Fourth Proportional to 876,821.80, 1,315,232.70 and 577,640.20

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Solution

The fourth proportional to 876,821.80, 1,315,232.70 and 577,640.20 is: 866,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,821.80 : 1,315,232.70 = 577,640.20 : x
  2. Step 2: Convert to fraction form
    876,821.80/1,315,232.70 = 577,640.20/x
  3. Step 3: Cross multiply
    876,821.80x = 1,315,232.70 × 577,640.20
  4. Step 4: Simplify right side
    876,821.80x = 759,731,279,874.54
  5. Step 5: Solve for x
    x = 759,731,279,874.54/876,821.80
  6. Step 6: Final answer
    x = 866,460.30

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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.