Home / 627,980.20-941,970.30-379,148.20

Finding the Fourth Proportional to 627,980.20, 941,970.30 and 379,148.20

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Solution

The fourth proportional to 627,980.20, 941,970.30 and 379,148.20 is: 568,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,980.20 : 941,970.30 = 379,148.20 : x
  2. Step 2: Convert to fraction form
    627,980.20/941,970.30 = 379,148.20/x
  3. Step 3: Cross multiply
    627,980.20x = 941,970.30 × 379,148.20
  4. Step 4: Simplify right side
    627,980.20x = 357,146,343,698.46
  5. Step 5: Solve for x
    x = 357,146,343,698.46/627,980.20
  6. Step 6: Final answer
    x = 568,722.30

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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.