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Finding the Fourth Proportional to 486,133.20, 727,644.60 and 448,808.40

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Solution

The fourth proportional to 486,133.20, 727,644.60 and 448,808.40 is: 671,776.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,133.20 : 727,644.60 = 448,808.40 : x
  2. Step 2: Convert to fraction form
    486,133.20/727,644.60 = 448,808.40/x
  3. Step 3: Cross multiply
    486,133.20x = 727,644.60 × 448,808.40
  4. Step 4: Simplify right side
    486,133.20x = 326,573,008,694.64
  5. Step 5: Solve for x
    x = 326,573,008,694.64/486,133.20
  6. Step 6: Final answer
    x = 671,776.81

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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.