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Finding the Fourth Proportional to 513,398.92, 773,564.23 and 425,399.97

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Solution

The fourth proportional to 513,398.92, 773,564.23 and 425,399.97 is: 640,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,398.92 : 773,564.23 = 425,399.97 : x
  2. Step 2: Convert to fraction form
    513,398.92/773,564.23 = 425,399.97/x
  3. Step 3: Cross multiply
    513,398.92x = 773,564.23 × 425,399.97
  4. Step 4: Simplify right side
    513,398.92x = 329,074,200,235.07
  5. Step 5: Solve for x
    x = 329,074,200,235.07/513,398.92
  6. Step 6: Final answer
    x = 640,971.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.