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Finding the Fourth Proportional to 518,591.84, 777,880.04 and 316,247.40

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Solution

The fourth proportional to 518,591.84, 777,880.04 and 316,247.40 is: 474,366.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,591.84 : 777,880.04 = 316,247.40 : x
  2. Step 2: Convert to fraction form
    518,591.84/777,880.04 = 316,247.40/x
  3. Step 3: Cross multiply
    518,591.84x = 777,880.04 × 316,247.40
  4. Step 4: Simplify right side
    518,591.84x = 246,002,538,580.66
  5. Step 5: Solve for x
    x = 246,002,538,580.66/518,591.84
  6. Step 6: Final answer
    x = 474,366.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.