Home / 819,905.80-1,229,567.10-370,841.80

Finding the Fourth Proportional to 819,905.80, 1,229,567.10 and 370,841.80

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Solution

The fourth proportional to 819,905.80, 1,229,567.10 and 370,841.80 is: 556,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,905.80 : 1,229,567.10 = 370,841.80 : x
  2. Step 2: Convert to fraction form
    819,905.80/1,229,567.10 = 370,841.80/x
  3. Step 3: Cross multiply
    819,905.80x = 1,229,567.10 × 370,841.80
  4. Step 4: Simplify right side
    819,905.80x = 455,974,876,584.78
  5. Step 5: Solve for x
    x = 455,974,876,584.78/819,905.80
  6. Step 6: Final answer
    x = 556,130.81

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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.