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Finding the Fourth Proportional to 423,252, 634,878 and 127,764

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Solution

The fourth proportional to 423,252, 634,878 and 127,764 is: 191,646

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,252 : 634,878 = 127,764 : x
  2. Step 2: Convert to fraction form
    423,252/634,878 = 127,764/x
  3. Step 3: Cross multiply
    423,252x = 634,878 × 127,764
  4. Step 4: Simplify right side
    423,252x = 81,114,552,792
  5. Step 5: Solve for x
    x = 81,114,552,792/423,252
  6. Step 6: Final answer
    x = 191,646

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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.