Home / 687,197.82-948,332.07-385,389.18

Finding the Fourth Proportional to 687,197.82, 948,332.07 and 385,389.18

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Solution

The fourth proportional to 687,197.82, 948,332.07 and 385,389.18 is: 531,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,197.82 : 948,332.07 = 385,389.18 : x
  2. Step 2: Convert to fraction form
    687,197.82/948,332.07 = 385,389.18/x
  3. Step 3: Cross multiply
    687,197.82x = 948,332.07 × 385,389.18
  4. Step 4: Simplify right side
    687,197.82x = 365,476,918,825.00
  5. Step 5: Solve for x
    x = 365,476,918,825.00/687,197.82
  6. Step 6: Final answer
    x = 531,836.55

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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.