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Finding the Fourth Proportional to 464,040, 640,684.08 and 356,418

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Solution

The fourth proportional to 464,040, 640,684.08 and 356,418 is: 492,094.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,040 : 640,684.08 = 356,418 : x
  2. Step 2: Convert to fraction form
    464,040/640,684.08 = 356,418/x
  3. Step 3: Cross multiply
    464,040x = 640,684.08 × 356,418
  4. Step 4: Simplify right side
    464,040x = 228,351,338,425.44
  5. Step 5: Solve for x
    x = 228,351,338,425.44/464,040
  6. Step 6: Final answer
    x = 492,094.08

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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.