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Finding the Fourth Proportional to 889,334.80, 1,334,002.20 and 763,363.60

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Solution

The fourth proportional to 889,334.80, 1,334,002.20 and 763,363.60 is: 1,145,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,334.80 : 1,334,002.20 = 763,363.60 : x
  2. Step 2: Convert to fraction form
    889,334.80/1,334,002.20 = 763,363.60/x
  3. Step 3: Cross multiply
    889,334.80x = 1,334,002.20 × 763,363.60
  4. Step 4: Simplify right side
    889,334.80x = 1,018,328,721,799.92
  5. Step 5: Solve for x
    x = 1,018,328,721,799.92/889,334.80
  6. Step 6: Final answer
    x = 1,145,045.40

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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.