Home / 557,180.13-768,900.69-315,456.42

Finding the Fourth Proportional to 557,180.13, 768,900.69 and 315,456.42

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Solution

The fourth proportional to 557,180.13, 768,900.69 and 315,456.42 is: 435,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,180.13 : 768,900.69 = 315,456.42 : x
  2. Step 2: Convert to fraction form
    557,180.13/768,900.69 = 315,456.42/x
  3. Step 3: Cross multiply
    557,180.13x = 768,900.69 × 315,456.42
  4. Step 4: Simplify right side
    557,180.13x = 242,554,659,002.93
  5. Step 5: Solve for x
    x = 242,554,659,002.93/557,180.13
  6. Step 6: Final answer
    x = 435,325.39

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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.