Home / 687,131.11-948,266.27-415,146.46

Finding the Fourth Proportional to 687,131.11, 948,266.27 and 415,146.46

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Solution

The fourth proportional to 687,131.11, 948,266.27 and 415,146.46 is: 572,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,131.11 : 948,266.27 = 415,146.46 : x
  2. Step 2: Convert to fraction form
    687,131.11/948,266.27 = 415,146.46/x
  3. Step 3: Cross multiply
    687,131.11x = 948,266.27 × 415,146.46
  4. Step 4: Simplify right side
    687,131.11x = 393,669,385,127.90
  5. Step 5: Solve for x
    x = 393,669,385,127.90/687,131.11
  6. Step 6: Final answer
    x = 572,917.42

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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.