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Finding the Fourth Proportional to 723,483.90, 998,410.46 and 401,223.78

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Solution

The fourth proportional to 723,483.90, 998,410.46 and 401,223.78 is: 553,690.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,483.90 : 998,410.46 = 401,223.78 : x
  2. Step 2: Convert to fraction form
    723,483.90/998,410.46 = 401,223.78/x
  3. Step 3: Cross multiply
    723,483.90x = 998,410.46 × 401,223.78
  4. Step 4: Simplify right side
    723,483.90x = 400,586,016,746.62
  5. Step 5: Solve for x
    x = 400,586,016,746.62/723,483.90
  6. Step 6: Final answer
    x = 553,690.30

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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.