Home / 779,969.20-1,169,953.80-218,930.80

Finding the Fourth Proportional to 779,969.20, 1,169,953.80 and 218,930.80

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Solution

The fourth proportional to 779,969.20, 1,169,953.80 and 218,930.80 is: 328,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,969.20 : 1,169,953.80 = 218,930.80 : x
  2. Step 2: Convert to fraction form
    779,969.20/1,169,953.80 = 218,930.80/x
  3. Step 3: Cross multiply
    779,969.20x = 1,169,953.80 × 218,930.80
  4. Step 4: Simplify right side
    779,969.20x = 256,138,921,397.04
  5. Step 5: Solve for x
    x = 256,138,921,397.04/779,969.20
  6. Step 6: Final answer
    x = 328,396.20

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Double scale
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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.