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Finding the Fourth Proportional to 519,724.01, 717,017.85 and 304,785.65

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Solution

The fourth proportional to 519,724.01, 717,017.85 and 304,785.65 is: 420,486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,724.01 : 717,017.85 = 304,785.65 : x
  2. Step 2: Convert to fraction form
    519,724.01/717,017.85 = 304,785.65/x
  3. Step 3: Cross multiply
    519,724.01x = 717,017.85 × 304,785.65
  4. Step 4: Simplify right side
    519,724.01x = 218,536,747,888.76
  5. Step 5: Solve for x
    x = 218,536,747,888.76/519,724.01
  6. Step 6: Final answer
    x = 420,486.15

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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.