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Finding the Fourth Proportional to 519,928.65, 717,378.53 and 302,007.85

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Solution

The fourth proportional to 519,928.65, 717,378.53 and 302,007.85 is: 416,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,928.65 : 717,378.53 = 302,007.85 : x
  2. Step 2: Convert to fraction form
    519,928.65/717,378.53 = 302,007.85/x
  3. Step 3: Cross multiply
    519,928.65x = 717,378.53 × 302,007.85
  4. Step 4: Simplify right side
    519,928.65x = 216,653,944,177.98
  5. Step 5: Solve for x
    x = 216,653,944,177.98/519,928.65
  6. Step 6: Final answer
    x = 416,699.38

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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.