Home / 557,826.20-769,806.12-303,177.40

Finding the Fourth Proportional to 557,826.20, 769,806.12 and 303,177.40

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Solution

The fourth proportional to 557,826.20, 769,806.12 and 303,177.40 is: 418,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,826.20 : 769,806.12 = 303,177.40 : x
  2. Step 2: Convert to fraction form
    557,826.20/769,806.12 = 303,177.40/x
  3. Step 3: Cross multiply
    557,826.20x = 769,806.12 × 303,177.40
  4. Step 4: Simplify right side
    557,826.20x = 233,387,817,965.69
  5. Step 5: Solve for x
    x = 233,387,817,965.69/557,826.20
  6. Step 6: Final answer
    x = 418,388.05

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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.