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Finding the Fourth Proportional to 445,577.60, 666,422.40 and 398,532.80

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Solution

The fourth proportional to 445,577.60, 666,422.40 and 398,532.80 is: 596,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,577.60 : 666,422.40 = 398,532.80 : x
  2. Step 2: Convert to fraction form
    445,577.60/666,422.40 = 398,532.80/x
  3. Step 3: Cross multiply
    445,577.60x = 666,422.40 × 398,532.80
  4. Step 4: Simplify right side
    445,577.60x = 265,591,185,054.72
  5. Step 5: Solve for x
    x = 265,591,185,054.72/445,577.60
  6. Step 6: Final answer
    x = 596,060.45

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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.