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Finding the Fourth Proportional to 617,630.49, 852,862.01 and 388,569.58

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Solution

The fourth proportional to 617,630.49, 852,862.01 and 388,569.58 is: 536,560.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,630.49 : 852,862.01 = 388,569.58 : x
  2. Step 2: Convert to fraction form
    617,630.49/852,862.01 = 388,569.58/x
  3. Step 3: Cross multiply
    617,630.49x = 852,862.01 × 388,569.58
  4. Step 4: Simplify right side
    617,630.49x = 331,396,226,816.50
  5. Step 5: Solve for x
    x = 331,396,226,816.50/617,630.49
  6. Step 6: Final answer
    x = 536,560.67

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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.