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Finding the Fourth Proportional to 401,862.78, 602,455.16 and 330,788.93

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Solution

The fourth proportional to 401,862.78, 602,455.16 and 330,788.93 is: 495,904.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,862.78 : 602,455.16 = 330,788.93 : x
  2. Step 2: Convert to fraction form
    401,862.78/602,455.16 = 330,788.93/x
  3. Step 3: Cross multiply
    401,862.78x = 602,455.16 × 330,788.93
  4. Step 4: Simplify right side
    401,862.78x = 199,285,493,083.16
  5. Step 5: Solve for x
    x = 199,285,493,083.16/401,862.78
  6. Step 6: Final answer
    x = 495,904.33

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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.