Home / 918,986.85-1,268,128.35-511,089.48

Finding the Fourth Proportional to 918,986.85, 1,268,128.35 and 511,089.48

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Solution

The fourth proportional to 918,986.85, 1,268,128.35 and 511,089.48 is: 705,262.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,986.85 : 1,268,128.35 = 511,089.48 : x
  2. Step 2: Convert to fraction form
    918,986.85/1,268,128.35 = 511,089.48/x
  3. Step 3: Cross multiply
    918,986.85x = 1,268,128.35 × 511,089.48
  4. Step 4: Simplify right side
    918,986.85x = 648,127,058,974.76
  5. Step 5: Solve for x
    x = 648,127,058,974.76/918,986.85
  6. Step 6: Final answer
    x = 705,262.60

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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.