Home / 989,627.58-1,364,784.39-836,985.78

Finding the Fourth Proportional to 989,627.58, 1,364,784.39 and 836,985.78

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Solution

The fourth proportional to 989,627.58, 1,364,784.39 and 836,985.78 is: 1,154,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,627.58 : 1,364,784.39 = 836,985.78 : x
  2. Step 2: Convert to fraction form
    989,627.58/1,364,784.39 = 836,985.78/x
  3. Step 3: Cross multiply
    989,627.58x = 1,364,784.39 × 836,985.78
  4. Step 4: Simplify right side
    989,627.58x = 1,142,305,127,195.97
  5. Step 5: Solve for x
    x = 1,142,305,127,195.97/989,627.58
  6. Step 6: Final answer
    x = 1,154,277.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.