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Finding the Fourth Proportional to 484,785, 668,989.80 and 269,924.94

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Solution

The fourth proportional to 484,785, 668,989.80 and 269,924.94 is: 372,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,785 : 668,989.80 = 269,924.94 : x
  2. Step 2: Convert to fraction form
    484,785/668,989.80 = 269,924.94/x
  3. Step 3: Cross multiply
    484,785x = 668,989.80 × 269,924.94
  4. Step 4: Simplify right side
    484,785x = 180,577,031,625.61
  5. Step 5: Solve for x
    x = 180,577,031,625.61/484,785
  6. Step 6: Final answer
    x = 372,488.90

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1.5x scale

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.