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Finding the Fourth Proportional to 615,398.80, 923,357.40 and 335,117.20

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Solution

The fourth proportional to 615,398.80, 923,357.40 and 335,117.20 is: 502,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,398.80 : 923,357.40 = 335,117.20 : x
  2. Step 2: Convert to fraction form
    615,398.80/923,357.40 = 335,117.20/x
  3. Step 3: Cross multiply
    615,398.80x = 923,357.40 × 335,117.20
  4. Step 4: Simplify right side
    615,398.80x = 309,432,946,487.28
  5. Step 5: Solve for x
    x = 309,432,946,487.28/615,398.80
  6. Step 6: Final answer
    x = 502,816.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.