Home / 919,132.65-1,268,372.61-511,222.95

Finding the Fourth Proportional to 919,132.65, 1,268,372.61 and 511,222.95

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Solution

The fourth proportional to 919,132.65, 1,268,372.61 and 511,222.95 is: 705,470.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,132.65 : 1,268,372.61 = 511,222.95 : x
  2. Step 2: Convert to fraction form
    919,132.65/1,268,372.61 = 511,222.95/x
  3. Step 3: Cross multiply
    919,132.65x = 1,268,372.61 × 511,222.95
  4. Step 4: Simplify right side
    919,132.65x = 648,421,187,383.40
  5. Step 5: Solve for x
    x = 648,421,187,383.40/919,132.65
  6. Step 6: Final answer
    x = 705,470.74

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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.