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Finding the Fourth Proportional to 672,927.48, 928,614.14 and 371,121.48

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Solution

The fourth proportional to 672,927.48, 928,614.14 and 371,121.48 is: 512,133.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,927.48 : 928,614.14 = 371,121.48 : x
  2. Step 2: Convert to fraction form
    672,927.48/928,614.14 = 371,121.48/x
  3. Step 3: Cross multiply
    672,927.48x = 928,614.14 × 371,121.48
  4. Step 4: Simplify right side
    672,927.48x = 344,628,653,985.73
  5. Step 5: Solve for x
    x = 344,628,653,985.73/672,927.48
  6. Step 6: Final answer
    x = 512,133.42

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1.5x scale

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.