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Finding the Fourth Proportional to 889,807.20, 1,335,148.20 and 416,410.80

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Solution

The fourth proportional to 889,807.20, 1,335,148.20 and 416,410.80 is: 624,820.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,807.20 : 1,335,148.20 = 416,410.80 : x
  2. Step 2: Convert to fraction form
    889,807.20/1,335,148.20 = 416,410.80/x
  3. Step 3: Cross multiply
    889,807.20x = 1,335,148.20 × 416,410.80
  4. Step 4: Simplify right side
    889,807.20x = 555,970,130,080.56
  5. Step 5: Solve for x
    x = 555,970,130,080.56/889,807.20
  6. Step 6: Final answer
    x = 624,820.89

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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.