Home / 687,131.74-948,267.13-415,147.08

Finding the Fourth Proportional to 687,131.74, 948,267.13 and 415,147.08

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Solution

The fourth proportional to 687,131.74, 948,267.13 and 415,147.08 is: 572,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,131.74 : 948,267.13 = 415,147.08 : x
  2. Step 2: Convert to fraction form
    687,131.74/948,267.13 = 415,147.08/x
  3. Step 3: Cross multiply
    687,131.74x = 948,267.13 × 415,147.08
  4. Step 4: Simplify right side
    687,131.74x = 393,670,330,079.48
  5. Step 5: Solve for x
    x = 393,670,330,079.48/687,131.74
  6. Step 6: Final answer
    x = 572,918.27

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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.