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Finding the Fourth Proportional to 638,274.55, 880,838.54 and 366,392.11

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Solution

The fourth proportional to 638,274.55, 880,838.54 and 366,392.11 is: 505,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,274.55 : 880,838.54 = 366,392.11 : x
  2. Step 2: Convert to fraction form
    638,274.55/880,838.54 = 366,392.11/x
  3. Step 3: Cross multiply
    638,274.55x = 880,838.54 × 366,392.11
  4. Step 4: Simplify right side
    638,274.55x = 322,732,291,239.92
  5. Step 5: Solve for x
    x = 322,732,291,239.92/638,274.55
  6. Step 6: Final answer
    x = 505,632.40

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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.