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Finding the Fourth Proportional to 615,411, 849,268.26 and 347,139

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Solution

The fourth proportional to 615,411, 849,268.26 and 347,139 is: 479,052.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,411 : 849,268.26 = 347,139 : x
  2. Step 2: Convert to fraction form
    615,411/849,268.26 = 347,139/x
  3. Step 3: Cross multiply
    615,411x = 849,268.26 × 347,139
  4. Step 4: Simplify right side
    615,411x = 294,814,134,508.14
  5. Step 5: Solve for x
    x = 294,814,134,508.14/615,411
  6. Step 6: Final answer
    x = 479,052.43

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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.