Home / 819,449.80-1,229,174.70-778,899.40

Finding the Fourth Proportional to 819,449.80, 1,229,174.70 and 778,899.40

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Solution

The fourth proportional to 819,449.80, 1,229,174.70 and 778,899.40 is: 1,168,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,449.80 : 1,229,174.70 = 778,899.40 : x
  2. Step 2: Convert to fraction form
    819,449.80/1,229,174.70 = 778,899.40/x
  3. Step 3: Cross multiply
    819,449.80x = 1,229,174.70 × 778,899.40
  4. Step 4: Simplify right side
    819,449.80x = 957,403,436,325.18
  5. Step 5: Solve for x
    x = 957,403,436,325.18/819,449.80
  6. Step 6: Final answer
    x = 1,168,349.10

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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.