Home / 839,466.40-1,259,084.40-278,442.40

Finding the Fourth Proportional to 839,466.40, 1,259,084.40 and 278,442.40

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Solution

The fourth proportional to 839,466.40, 1,259,084.40 and 278,442.40 is: 417,625.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,466.40 : 1,259,084.40 = 278,442.40 : x
  2. Step 2: Convert to fraction form
    839,466.40/1,259,084.40 = 278,442.40/x
  3. Step 3: Cross multiply
    839,466.40x = 1,259,084.40 × 278,442.40
  4. Step 4: Simplify right side
    839,466.40x = 350,582,482,138.56
  5. Step 5: Solve for x
    x = 350,582,482,138.56/839,466.40
  6. Step 6: Final answer
    x = 417,625.39

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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.