Home / 498,617.19-688,145.90-307,625.67

Finding the Fourth Proportional to 498,617.19, 688,145.90 and 307,625.67

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Solution

The fourth proportional to 498,617.19, 688,145.90 and 307,625.67 is: 424,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,617.19 : 688,145.90 = 307,625.67 : x
  2. Step 2: Convert to fraction form
    498,617.19/688,145.90 = 307,625.67/x
  3. Step 3: Cross multiply
    498,617.19x = 688,145.90 × 307,625.67
  4. Step 4: Simplify right side
    498,617.19x = 211,691,342,007.13
  5. Step 5: Solve for x
    x = 211,691,342,007.13/498,617.19
  6. Step 6: Final answer
    x = 424,556.85

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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.