Home / 687,131.24-948,266.45-415,146.58

Finding the Fourth Proportional to 687,131.24, 948,266.45 and 415,146.58

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Solution

The fourth proportional to 687,131.24, 948,266.45 and 415,146.58 is: 572,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,131.24 : 948,266.45 = 415,146.58 : x
  2. Step 2: Convert to fraction form
    687,131.24/948,266.45 = 415,146.58/x
  3. Step 3: Cross multiply
    687,131.24x = 948,266.45 × 415,146.58
  4. Step 4: Simplify right side
    687,131.24x = 393,669,573,646.24
  5. Step 5: Solve for x
    x = 393,669,573,646.24/687,131.24
  6. Step 6: Final answer
    x = 572,917.59

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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.