Home / 679,712.97-1,019,569.53-323,647.50

Finding the Fourth Proportional to 679,712.97, 1,019,569.53 and 323,647.50

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Solution

The fourth proportional to 679,712.97, 1,019,569.53 and 323,647.50 is: 485,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,712.97 : 1,019,569.53 = 323,647.50 : x
  2. Step 2: Convert to fraction form
    679,712.97/1,019,569.53 = 323,647.50/x
  3. Step 3: Cross multiply
    679,712.97x = 1,019,569.53 × 323,647.50
  4. Step 4: Simplify right side
    679,712.97x = 329,981,129,460.68
  5. Step 5: Solve for x
    x = 329,981,129,460.68/679,712.97
  6. Step 6: Final answer
    x = 485,471.29

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Half scale
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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.