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Finding the Fourth Proportional to 557,064.56, 768,767.52 and 315,342.13

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Solution

The fourth proportional to 557,064.56, 768,767.52 and 315,342.13 is: 435,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,064.56 : 768,767.52 = 315,342.13 : x
  2. Step 2: Convert to fraction form
    557,064.56/768,767.52 = 315,342.13/x
  3. Step 3: Cross multiply
    557,064.56x = 768,767.52 × 315,342.13
  4. Step 4: Simplify right side
    557,064.56x = 242,424,787,231.62
  5. Step 5: Solve for x
    x = 242,424,787,231.62/557,064.56
  6. Step 6: Final answer
    x = 435,182.57

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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.