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Finding the Fourth Proportional to 903,675.72, 1,354,684.14 and 312,285

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Solution

The fourth proportional to 903,675.72, 1,354,684.14 and 312,285 is: 468,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,675.72 : 1,354,684.14 = 312,285 : x
  2. Step 2: Convert to fraction form
    903,675.72/1,354,684.14 = 312,285/x
  3. Step 3: Cross multiply
    903,675.72x = 1,354,684.14 × 312,285
  4. Step 4: Simplify right side
    903,675.72x = 423,047,536,659.90
  5. Step 5: Solve for x
    x = 423,047,536,659.90/903,675.72
  6. Step 6: Final answer
    x = 468,140.87

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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.