Home / 499,025.18-687,937.72-355,536.11

Finding the Fourth Proportional to 499,025.18, 687,937.72 and 355,536.11

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Solution

The fourth proportional to 499,025.18, 687,937.72 and 355,536.11 is: 490,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,025.18 : 687,937.72 = 355,536.11 : x
  2. Step 2: Convert to fraction form
    499,025.18/687,937.72 = 355,536.11/x
  3. Step 3: Cross multiply
    499,025.18x = 687,937.72 × 355,536.11
  4. Step 4: Simplify right side
    499,025.18x = 244,586,700,891.07
  5. Step 5: Solve for x
    x = 244,586,700,891.07/499,025.18
  6. Step 6: Final answer
    x = 490,128.98

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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.