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Finding the Fourth Proportional to 664,774.80, 997,340.40 and 265,695.90

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Solution

The fourth proportional to 664,774.80, 997,340.40 and 265,695.90 is: 398,615.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,774.80 : 997,340.40 = 265,695.90 : x
  2. Step 2: Convert to fraction form
    664,774.80/997,340.40 = 265,695.90/x
  3. Step 3: Cross multiply
    664,774.80x = 997,340.40 × 265,695.90
  4. Step 4: Simplify right side
    664,774.80x = 264,989,255,184.36
  5. Step 5: Solve for x
    x = 264,989,255,184.36/664,774.80
  6. Step 6: Final answer
    x = 398,615.07

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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.