Home / 689,740.36-951,832.53-387,934.36

Finding the Fourth Proportional to 689,740.36, 951,832.53 and 387,934.36

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Solution

The fourth proportional to 689,740.36, 951,832.53 and 387,934.36 is: 535,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,740.36 : 951,832.53 = 387,934.36 : x
  2. Step 2: Convert to fraction form
    689,740.36/951,832.53 = 387,934.36/x
  3. Step 3: Cross multiply
    689,740.36x = 951,832.53 × 387,934.36
  4. Step 4: Simplify right side
    689,740.36x = 369,248,543,352.73
  5. Step 5: Solve for x
    x = 369,248,543,352.73/689,740.36
  6. Step 6: Final answer
    x = 535,344.26

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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.