Home / 819,784.80-1,229,677.20-258,746.40

Finding the Fourth Proportional to 819,784.80, 1,229,677.20 and 258,746.40

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Solution

The fourth proportional to 819,784.80, 1,229,677.20 and 258,746.40 is: 388,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,784.80 : 1,229,677.20 = 258,746.40 : x
  2. Step 2: Convert to fraction form
    819,784.80/1,229,677.20 = 258,746.40/x
  3. Step 3: Cross multiply
    819,784.80x = 1,229,677.20 × 258,746.40
  4. Step 4: Simplify right side
    819,784.80x = 318,174,548,662.08
  5. Step 5: Solve for x
    x = 318,174,548,662.08/819,784.80
  6. Step 6: Final answer
    x = 388,119.60

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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.