Home / 516,723.78-713,118.72-309,999.93

Finding the Fourth Proportional to 516,723.78, 713,118.72 and 309,999.93

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Solution

The fourth proportional to 516,723.78, 713,118.72 and 309,999.93 is: 427,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,723.78 : 713,118.72 = 309,999.93 : x
  2. Step 2: Convert to fraction form
    516,723.78/713,118.72 = 309,999.93/x
  3. Step 3: Cross multiply
    516,723.78x = 713,118.72 × 309,999.93
  4. Step 4: Simplify right side
    516,723.78x = 221,066,753,132.94
  5. Step 5: Solve for x
    x = 221,066,753,132.94/516,723.78
  6. Step 6: Final answer
    x = 427,823.85

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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.