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Finding the Fourth Proportional to 903,726.72, 1,354,760.64 and 312,336

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Solution

The fourth proportional to 903,726.72, 1,354,760.64 and 312,336 is: 468,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,726.72 : 1,354,760.64 = 312,336 : x
  2. Step 2: Convert to fraction form
    903,726.72/1,354,760.64 = 312,336/x
  3. Step 3: Cross multiply
    903,726.72x = 1,354,760.64 × 312,336
  4. Step 4: Simplify right side
    903,726.72x = 423,140,519,255.04
  5. Step 5: Solve for x
    x = 423,140,519,255.04/903,726.72
  6. Step 6: Final answer
    x = 468,217.34

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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.