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Finding the Fourth Proportional to 615,471, 849,379.32 and 347,199

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Solution

The fourth proportional to 615,471, 849,379.32 and 347,199 is: 479,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,471 : 849,379.32 = 347,199 : x
  2. Step 2: Convert to fraction form
    615,471/849,379.32 = 347,199/x
  3. Step 3: Cross multiply
    615,471x = 849,379.32 × 347,199
  4. Step 4: Simplify right side
    615,471x = 294,903,650,524.68
  5. Step 5: Solve for x
    x = 294,903,650,524.68/615,471
  6. Step 6: Final answer
    x = 479,151.17

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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.