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Finding the Fourth Proportional to 628,737.99, 867,658.53 and 342,260.24

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Solution

The fourth proportional to 628,737.99, 867,658.53 and 342,260.24 is: 472,319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,737.99 : 867,658.53 = 342,260.24 : x
  2. Step 2: Convert to fraction form
    628,737.99/867,658.53 = 342,260.24/x
  3. Step 3: Cross multiply
    628,737.99x = 867,658.53 × 342,260.24
  4. Step 4: Simplify right side
    628,737.99x = 296,965,012,377.56
  5. Step 5: Solve for x
    x = 296,965,012,377.56/628,737.99
  6. Step 6: Final answer
    x = 472,319.18

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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.