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Finding the Fourth Proportional to 617,608.20, 926,498.70 and 262,619.40

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Solution

The fourth proportional to 617,608.20, 926,498.70 and 262,619.40 is: 393,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,608.20 : 926,498.70 = 262,619.40 : x
  2. Step 2: Convert to fraction form
    617,608.20/926,498.70 = 262,619.40/x
  3. Step 3: Cross multiply
    617,608.20x = 926,498.70 × 262,619.40
  4. Step 4: Simplify right side
    617,608.20x = 243,316,532,694.78
  5. Step 5: Solve for x
    x = 243,316,532,694.78/617,608.20
  6. Step 6: Final answer
    x = 393,965.84

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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.