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Finding the Fourth Proportional to 578,052.72, 797,934.24 and 386,996.40

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Solution

The fourth proportional to 578,052.72, 797,934.24 and 386,996.40 is: 534,203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,052.72 : 797,934.24 = 386,996.40 : x
  2. Step 2: Convert to fraction form
    578,052.72/797,934.24 = 386,996.40/x
  3. Step 3: Cross multiply
    578,052.72x = 797,934.24 × 386,996.40
  4. Step 4: Simplify right side
    578,052.72x = 308,797,678,316.74
  5. Step 5: Solve for x
    x = 308,797,678,316.74/578,052.72
  6. Step 6: Final answer
    x = 534,203.31

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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.