Home / 917,563.17-1,266,375.13-660,291.78

Finding the Fourth Proportional to 917,563.17, 1,266,375.13 and 660,291.78

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Solution

The fourth proportional to 917,563.17, 1,266,375.13 and 660,291.78 is: 911,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,563.17 : 1,266,375.13 = 660,291.78 : x
  2. Step 2: Convert to fraction form
    917,563.17/1,266,375.13 = 660,291.78/x
  3. Step 3: Cross multiply
    917,563.17x = 1,266,375.13 × 660,291.78
  4. Step 4: Simplify right side
    917,563.17x = 836,177,088,735.43
  5. Step 5: Solve for x
    x = 836,177,088,735.43/917,563.17
  6. Step 6: Final answer
    x = 911,301.93

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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.