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Finding the Fourth Proportional to 615,417, 849,276.54 and 347,145

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Solution

The fourth proportional to 615,417, 849,276.54 and 347,145 is: 479,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,417 : 849,276.54 = 347,145 : x
  2. Step 2: Convert to fraction form
    615,417/849,276.54 = 347,145/x
  3. Step 3: Cross multiply
    615,417x = 849,276.54 × 347,145
  4. Step 4: Simplify right side
    615,417x = 294,822,104,478.30
  5. Step 5: Solve for x
    x = 294,822,104,478.30/615,417
  6. Step 6: Final answer
    x = 479,060.71

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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.