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Finding the Fourth Proportional to 403,838.60, 605,101.80 and 336,916.40

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Solution

The fourth proportional to 403,838.60, 605,101.80 and 336,916.40 is: 504,827.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,838.60 : 605,101.80 = 336,916.40 : x
  2. Step 2: Convert to fraction form
    403,838.60/605,101.80 = 336,916.40/x
  3. Step 3: Cross multiply
    403,838.60x = 605,101.80 × 336,916.40
  4. Step 4: Simplify right side
    403,838.60x = 203,868,720,089.52
  5. Step 5: Solve for x
    x = 203,868,720,089.52/403,838.60
  6. Step 6: Final answer
    x = 504,827.23

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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.