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Finding the Fourth Proportional to 520,074.54, 717,707.79 and 290,650.14

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Solution

The fourth proportional to 520,074.54, 717,707.79 and 290,650.14 is: 401,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,074.54 : 717,707.79 = 290,650.14 : x
  2. Step 2: Convert to fraction form
    520,074.54/717,707.79 = 290,650.14/x
  3. Step 3: Cross multiply
    520,074.54x = 717,707.79 × 290,650.14
  4. Step 4: Simplify right side
    520,074.54x = 208,601,869,642.59
  5. Step 5: Solve for x
    x = 208,601,869,642.59/520,074.54
  6. Step 6: Final answer
    x = 401,099.95

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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.