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Finding the Fourth Proportional to 615,428.77, 849,334.49 and 343,549.73

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Solution

The fourth proportional to 615,428.77, 849,334.49 and 343,549.73 is: 474,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,428.77 : 849,334.49 = 343,549.73 : x
  2. Step 2: Convert to fraction form
    615,428.77/849,334.49 = 343,549.73/x
  3. Step 3: Cross multiply
    615,428.77x = 849,334.49 × 343,549.73
  4. Step 4: Simplify right side
    615,428.77x = 291,788,634,719.19
  5. Step 5: Solve for x
    x = 291,788,634,719.19/615,428.77
  6. Step 6: Final answer
    x = 474,122.51

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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.