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Finding the Fourth Proportional to 404,906.60, 607,359.90 and 286,711.40

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Solution

The fourth proportional to 404,906.60, 607,359.90 and 286,711.40 is: 430,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,906.60 : 607,359.90 = 286,711.40 : x
  2. Step 2: Convert to fraction form
    404,906.60/607,359.90 = 286,711.40/x
  3. Step 3: Cross multiply
    404,906.60x = 607,359.90 × 286,711.40
  4. Step 4: Simplify right side
    404,906.60x = 174,137,007,232.86
  5. Step 5: Solve for x
    x = 174,137,007,232.86/404,906.60
  6. Step 6: Final answer
    x = 430,067.10

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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.