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Finding the Fourth Proportional to 624,988.34, 862,479.88 and 353,144.24

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Solution

The fourth proportional to 624,988.34, 862,479.88 and 353,144.24 is: 487,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,988.34 : 862,479.88 = 353,144.24 : x
  2. Step 2: Convert to fraction form
    624,988.34/862,479.88 = 353,144.24/x
  3. Step 3: Cross multiply
    624,988.34x = 862,479.88 × 353,144.24
  4. Step 4: Simplify right side
    624,988.34x = 304,579,797,425.49
  5. Step 5: Solve for x
    x = 304,579,797,425.49/624,988.34
  6. Step 6: Final answer
    x = 487,336.77

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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.