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Finding the Fourth Proportional to 628,502.64, 867,332.03 and 342,022.65

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Solution

The fourth proportional to 628,502.64, 867,332.03 and 342,022.65 is: 471,990.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,502.64 : 867,332.03 = 342,022.65 : x
  2. Step 2: Convert to fraction form
    628,502.64/867,332.03 = 342,022.65/x
  3. Step 3: Cross multiply
    628,502.64x = 867,332.03 × 342,022.65
  4. Step 4: Simplify right side
    628,502.64x = 296,647,199,330.48
  5. Step 5: Solve for x
    x = 296,647,199,330.48/628,502.64
  6. Step 6: Final answer
    x = 471,990.38

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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.