Home / 778,785.98-1,168,179.03-329,390.28

Finding the Fourth Proportional to 778,785.98, 1,168,179.03 and 329,390.28

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Solution

The fourth proportional to 778,785.98, 1,168,179.03 and 329,390.28 is: 494,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,785.98 : 1,168,179.03 = 329,390.28 : x
  2. Step 2: Convert to fraction form
    778,785.98/1,168,179.03 = 329,390.28/x
  3. Step 3: Cross multiply
    778,785.98x = 1,168,179.03 × 329,390.28
  4. Step 4: Simplify right side
    778,785.98x = 384,786,817,781.83
  5. Step 5: Solve for x
    x = 384,786,817,781.83/778,785.98
  6. Step 6: Final answer
    x = 494,085.45

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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.