Home / 889,632.80-1,334,546.40-861,639.20

Finding the Fourth Proportional to 889,632.80, 1,334,546.40 and 861,639.20

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Solution

The fourth proportional to 889,632.80, 1,334,546.40 and 861,639.20 is: 1,292,552.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,632.80 : 1,334,546.40 = 861,639.20 : x
  2. Step 2: Convert to fraction form
    889,632.80/1,334,546.40 = 861,639.20/x
  3. Step 3: Cross multiply
    889,632.80x = 1,334,546.40 × 861,639.20
  4. Step 4: Simplify right side
    889,632.80x = 1,149,897,492,458.88
  5. Step 5: Solve for x
    x = 1,149,897,492,458.88/889,632.80
  6. Step 6: Final answer
    x = 1,292,552.94

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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.