Home / 778,519.20-1,167,778.80-209,899.20

Finding the Fourth Proportional to 778,519.20, 1,167,778.80 and 209,899.20

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Solution

The fourth proportional to 778,519.20, 1,167,778.80 and 209,899.20 is: 314,848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,519.20 : 1,167,778.80 = 209,899.20 : x
  2. Step 2: Convert to fraction form
    778,519.20/1,167,778.80 = 209,899.20/x
  3. Step 3: Cross multiply
    778,519.20x = 1,167,778.80 × 209,899.20
  4. Step 4: Simplify right side
    778,519.20x = 245,115,835,896.96
  5. Step 5: Solve for x
    x = 245,115,835,896.96/778,519.20
  6. Step 6: Final answer
    x = 314,848.80

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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.