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Finding the Fourth Proportional to 889,728.60, 1,334,592.90 and 881,434.20

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Solution

The fourth proportional to 889,728.60, 1,334,592.90 and 881,434.20 is: 1,322,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,728.60 : 1,334,592.90 = 881,434.20 : x
  2. Step 2: Convert to fraction form
    889,728.60/1,334,592.90 = 881,434.20/x
  3. Step 3: Cross multiply
    889,728.60x = 1,334,592.90 × 881,434.20
  4. Step 4: Simplify right side
    889,728.60x = 1,176,355,825,137.18
  5. Step 5: Solve for x
    x = 1,176,355,825,137.18/889,728.60
  6. Step 6: Final answer
    x = 1,322,151.30

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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.