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Finding the Fourth Proportional to 555,787.11, 766,986.71 and 301,138.29

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Solution

The fourth proportional to 555,787.11, 766,986.71 and 301,138.29 is: 415,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,787.11 : 766,986.71 = 301,138.29 : x
  2. Step 2: Convert to fraction form
    555,787.11/766,986.71 = 301,138.29/x
  3. Step 3: Cross multiply
    555,787.11x = 766,986.71 × 301,138.29
  4. Step 4: Simplify right side
    555,787.11x = 230,969,066,302.13
  5. Step 5: Solve for x
    x = 230,969,066,302.13/555,787.11
  6. Step 6: Final answer
    x = 415,571.11

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1.5x scale

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.