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Finding the Fourth Proportional to 723,502.80, 998,368.44 and 401,211.90

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Solution

The fourth proportional to 723,502.80, 998,368.44 and 401,211.90 is: 553,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,502.80 : 998,368.44 = 401,211.90 : x
  2. Step 2: Convert to fraction form
    723,502.80/998,368.44 = 401,211.90/x
  3. Step 3: Cross multiply
    723,502.80x = 998,368.44 × 401,211.90
  4. Step 4: Simplify right side
    723,502.80x = 400,557,297,207.89
  5. Step 5: Solve for x
    x = 400,557,297,207.89/723,502.80
  6. Step 6: Final answer
    x = 553,636.14

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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.