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Finding the Fourth Proportional to 763,505, 1,053,680.64 and 423,995.12

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Solution

The fourth proportional to 763,505, 1,053,680.64 and 423,995.12 is: 585,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,505 : 1,053,680.64 = 423,995.12 : x
  2. Step 2: Convert to fraction form
    763,505/1,053,680.64 = 423,995.12/x
  3. Step 3: Cross multiply
    763,505x = 1,053,680.64 × 423,995.12
  4. Step 4: Simplify right side
    763,505x = 446,755,449,398.48
  5. Step 5: Solve for x
    x = 446,755,449,398.48/763,505
  6. Step 6: Final answer
    x = 585,137.56

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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.