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Finding the Fourth Proportional to 615,594.52, 849,534.80 and 386,161.49

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Solution

The fourth proportional to 615,594.52, 849,534.80 and 386,161.49 is: 532,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,594.52 : 849,534.80 = 386,161.49 : x
  2. Step 2: Convert to fraction form
    615,594.52/849,534.80 = 386,161.49/x
  3. Step 3: Cross multiply
    615,594.52x = 849,534.80 × 386,161.49
  4. Step 4: Simplify right side
    615,594.52x = 328,057,624,367.88
  5. Step 5: Solve for x
    x = 328,057,624,367.88/615,594.52
  6. Step 6: Final answer
    x = 532,911.86

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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.