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Finding the Fourth Proportional to 464,339.82, 640,517.46 and 291,985.02

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Solution

The fourth proportional to 464,339.82, 640,517.46 and 291,985.02 is: 402,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,339.82 : 640,517.46 = 291,985.02 : x
  2. Step 2: Convert to fraction form
    464,339.82/640,517.46 = 291,985.02/x
  3. Step 3: Cross multiply
    464,339.82x = 640,517.46 × 291,985.02
  4. Step 4: Simplify right side
    464,339.82x = 187,021,503,368.45
  5. Step 5: Solve for x
    x = 187,021,503,368.45/464,339.82
  6. Step 6: Final answer
    x = 402,768.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.