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Finding the Fourth Proportional to 556,279.20, 834,418.80 and 379,132.20

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Solution

The fourth proportional to 556,279.20, 834,418.80 and 379,132.20 is: 568,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,279.20 : 834,418.80 = 379,132.20 : x
  2. Step 2: Convert to fraction form
    556,279.20/834,418.80 = 379,132.20/x
  3. Step 3: Cross multiply
    556,279.20x = 834,418.80 × 379,132.20
  4. Step 4: Simplify right side
    556,279.20x = 316,355,035,365.36
  5. Step 5: Solve for x
    x = 316,355,035,365.36/556,279.20
  6. Step 6: Final answer
    x = 568,698.30

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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.