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Finding the Fourth Proportional to 615,726.49, 849,755.07 and 343,846.90

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Solution

The fourth proportional to 615,726.49, 849,755.07 and 343,846.90 is: 474,538.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,726.49 : 849,755.07 = 343,846.90 : x
  2. Step 2: Convert to fraction form
    615,726.49/849,755.07 = 343,846.90/x
  3. Step 3: Cross multiply
    615,726.49x = 849,755.07 × 343,846.90
  4. Step 4: Simplify right side
    615,726.49x = 292,185,646,578.78
  5. Step 5: Solve for x
    x = 292,185,646,578.78/615,726.49
  6. Step 6: Final answer
    x = 474,538.05

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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.