Home / 557,297.27-769,070.18-315,579.78

Finding the Fourth Proportional to 557,297.27, 769,070.18 and 315,579.78

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Solution

The fourth proportional to 557,297.27, 769,070.18 and 315,579.78 is: 435,500.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,297.27 : 769,070.18 = 315,579.78 : x
  2. Step 2: Convert to fraction form
    557,297.27/769,070.18 = 315,579.78/x
  3. Step 3: Cross multiply
    557,297.27x = 769,070.18 × 315,579.78
  4. Step 4: Simplify right side
    557,297.27x = 242,702,993,747.05
  5. Step 5: Solve for x
    x = 242,702,993,747.05/557,297.27
  6. Step 6: Final answer
    x = 435,500.06

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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.