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Finding the Fourth Proportional to 568,398.39, 784,389.65 and 313,749.51

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Solution

The fourth proportional to 568,398.39, 784,389.65 and 313,749.51 is: 432,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,398.39 : 784,389.65 = 313,749.51 : x
  2. Step 2: Convert to fraction form
    568,398.39/784,389.65 = 313,749.51/x
  3. Step 3: Cross multiply
    568,398.39x = 784,389.65 × 313,749.51
  4. Step 4: Simplify right side
    568,398.39x = 246,101,868,336.57
  5. Step 5: Solve for x
    x = 246,101,868,336.57/568,398.39
  6. Step 6: Final answer
    x = 432,974.25

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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.