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Finding the Fourth Proportional to 385,626.39, 577,686.29 and 265,662.15

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Solution

The fourth proportional to 385,626.39, 577,686.29 and 265,662.15 is: 397,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,626.39 : 577,686.29 = 265,662.15 : x
  2. Step 2: Convert to fraction form
    385,626.39/577,686.29 = 265,662.15/x
  3. Step 3: Cross multiply
    385,626.39x = 577,686.29 × 265,662.15
  4. Step 4: Simplify right side
    385,626.39x = 153,469,380,498.61
  5. Step 5: Solve for x
    x = 153,469,380,498.61/385,626.39
  6. Step 6: Final answer
    x = 397,974.27

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1.5x scale

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.