Home / 723,431.89-998,331.97-401,189.59

Finding the Fourth Proportional to 723,431.89, 998,331.97 and 401,189.59

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Solution

The fourth proportional to 723,431.89, 998,331.97 and 401,189.59 is: 553,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,431.89 : 998,331.97 = 401,189.59 : x
  2. Step 2: Convert to fraction form
    723,431.89/998,331.97 = 401,189.59/x
  3. Step 3: Cross multiply
    723,431.89x = 998,331.97 × 401,189.59
  4. Step 4: Simplify right side
    723,431.89x = 400,520,386,730.59
  5. Step 5: Solve for x
    x = 400,520,386,730.59/723,431.89
  6. Step 6: Final answer
    x = 553,639.39

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.