Home / 710,943.88-981,103.38-409,138.12

Finding the Fourth Proportional to 710,943.88, 981,103.38 and 409,138.12

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Solution

The fourth proportional to 710,943.88, 981,103.38 and 409,138.12 is: 564,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,943.88 : 981,103.38 = 409,138.12 : x
  2. Step 2: Convert to fraction form
    710,943.88/981,103.38 = 409,138.12/x
  3. Step 3: Cross multiply
    710,943.88x = 981,103.38 × 409,138.12
  4. Step 4: Simplify right side
    710,943.88x = 401,406,792,418.85
  5. Step 5: Solve for x
    x = 401,406,792,418.85/710,943.88
  6. Step 6: Final answer
    x = 564,611.08

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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.