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Finding the Fourth Proportional to 568,073.39, 783,924.08 and 309,955.28

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Solution

The fourth proportional to 568,073.39, 783,924.08 and 309,955.28 is: 427,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,073.39 : 783,924.08 = 309,955.28 : x
  2. Step 2: Convert to fraction form
    568,073.39/783,924.08 = 309,955.28/x
  3. Step 3: Cross multiply
    568,073.39x = 783,924.08 × 309,955.28
  4. Step 4: Simplify right side
    568,073.39x = 242,981,402,245.75
  5. Step 5: Solve for x
    x = 242,981,402,245.75/568,073.39
  6. Step 6: Final answer
    x = 427,728.90

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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.