Home / 913,911.18-1,261,197.27-511,503.18

Finding the Fourth Proportional to 913,911.18, 1,261,197.27 and 511,503.18

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Solution

The fourth proportional to 913,911.18, 1,261,197.27 and 511,503.18 is: 705,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,911.18 : 1,261,197.27 = 511,503.18 : x
  2. Step 2: Convert to fraction form
    913,911.18/1,261,197.27 = 511,503.18/x
  3. Step 3: Cross multiply
    913,911.18x = 1,261,197.27 × 511,503.18
  4. Step 4: Simplify right side
    913,911.18x = 645,106,414,212.32
  5. Step 5: Solve for x
    x = 645,106,414,212.32/913,911.18
  6. Step 6: Final answer
    x = 705,874.30

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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.