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Finding the Fourth Proportional to 556,821.80, 835,232.70 and 415,104.20

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Solution

The fourth proportional to 556,821.80, 835,232.70 and 415,104.20 is: 622,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,821.80 : 835,232.70 = 415,104.20 : x
  2. Step 2: Convert to fraction form
    556,821.80/835,232.70 = 415,104.20/x
  3. Step 3: Cross multiply
    556,821.80x = 835,232.70 × 415,104.20
  4. Step 4: Simplify right side
    556,821.80x = 346,708,601,747.34
  5. Step 5: Solve for x
    x = 346,708,601,747.34/556,821.80
  6. Step 6: Final answer
    x = 622,656.30

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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.