Home / 918,988.86-1,268,131.10-511,091.48

Finding the Fourth Proportional to 918,988.86, 1,268,131.10 and 511,091.48

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Solution

The fourth proportional to 918,988.86, 1,268,131.10 and 511,091.48 is: 705,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,988.86 : 1,268,131.10 = 511,091.48 : x
  2. Step 2: Convert to fraction form
    918,988.86/1,268,131.10 = 511,091.48/x
  3. Step 3: Cross multiply
    918,988.86x = 1,268,131.10 × 511,091.48
  4. Step 4: Simplify right side
    918,988.86x = 648,131,000,733.03
  5. Step 5: Solve for x
    x = 648,131,000,733.03/918,988.86
  6. Step 6: Final answer
    x = 705,265.35

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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.