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Finding the Fourth Proportional to 672,109, 927,510.50 and 370,309.48

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Solution

The fourth proportional to 672,109, 927,510.50 and 370,309.48 is: 511,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,109 : 927,510.50 = 370,309.48 : x
  2. Step 2: Convert to fraction form
    672,109/927,510.50 = 370,309.48/x
  3. Step 3: Cross multiply
    672,109x = 927,510.50 × 370,309.48
  4. Step 4: Simplify right side
    672,109x = 343,465,930,949.54
  5. Step 5: Solve for x
    x = 343,465,930,949.54/672,109
  6. Step 6: Final answer
    x = 511,027.13

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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.