Home / 687,198.82-948,333.45-385,390.18

Finding the Fourth Proportional to 687,198.82, 948,333.45 and 385,390.18

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Solution

The fourth proportional to 687,198.82, 948,333.45 and 385,390.18 is: 531,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,198.82 : 948,333.45 = 385,390.18 : x
  2. Step 2: Convert to fraction form
    687,198.82/948,333.45 = 385,390.18/x
  3. Step 3: Cross multiply
    687,198.82x = 948,333.45 × 385,390.18
  4. Step 4: Simplify right side
    687,198.82x = 365,478,398,995.52
  5. Step 5: Solve for x
    x = 365,478,398,995.52/687,198.82
  6. Step 6: Final answer
    x = 531,837.93

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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.