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Finding the Fourth Proportional to 617,643.80, 926,811.30 and 262,597.40

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Solution

The fourth proportional to 617,643.80, 926,811.30 and 262,597.40 is: 394,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,643.80 : 926,811.30 = 262,597.40 : x
  2. Step 2: Convert to fraction form
    617,643.80/926,811.30 = 262,597.40/x
  3. Step 3: Cross multiply
    617,643.80x = 926,811.30 × 262,597.40
  4. Step 4: Simplify right side
    617,643.80x = 243,378,237,670.62
  5. Step 5: Solve for x
    x = 243,378,237,670.62/617,643.80
  6. Step 6: Final answer
    x = 394,043.04

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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.