Home / 519,631.70-778,864.35-220,061.30

Finding the Fourth Proportional to 519,631.70, 778,864.35 and 220,061.30

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Solution

The fourth proportional to 519,631.70, 778,864.35 and 220,061.30 is: 329,844.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,631.70 : 778,864.35 = 220,061.30 : x
  2. Step 2: Convert to fraction form
    519,631.70/778,864.35 = 220,061.30/x
  3. Step 3: Cross multiply
    519,631.70x = 778,864.35 × 220,061.30
  4. Step 4: Simplify right side
    519,631.70x = 171,397,901,384.66
  5. Step 5: Solve for x
    x = 171,397,901,384.66/519,631.70
  6. Step 6: Final answer
    x = 329,844.97

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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.