Home / 928,195.11-1,280,987.60-520,290.45

Finding the Fourth Proportional to 928,195.11, 1,280,987.60 and 520,290.45

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Solution

The fourth proportional to 928,195.11, 1,280,987.60 and 520,290.45 is: 718,044.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,195.11 : 1,280,987.60 = 520,290.45 : x
  2. Step 2: Convert to fraction form
    928,195.11/1,280,987.60 = 520,290.45/x
  3. Step 3: Cross multiply
    928,195.11x = 1,280,987.60 × 520,290.45
  4. Step 4: Simplify right side
    928,195.11x = 666,485,612,246.97
  5. Step 5: Solve for x
    x = 666,485,612,246.97/928,195.11
  6. Step 6: Final answer
    x = 718,044.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.