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Finding the Fourth Proportional to 688,059.50, 949,522.65 and 386,350.70

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Solution

The fourth proportional to 688,059.50, 949,522.65 and 386,350.70 is: 533,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,059.50 : 949,522.65 = 386,350.70 : x
  2. Step 2: Convert to fraction form
    688,059.50/949,522.65 = 386,350.70/x
  3. Step 3: Cross multiply
    688,059.50x = 949,522.65 × 386,350.70
  4. Step 4: Simplify right side
    688,059.50x = 366,848,740,493.36
  5. Step 5: Solve for x
    x = 366,848,740,493.36/688,059.50
  6. Step 6: Final answer
    x = 533,164.27

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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.