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Finding the Fourth Proportional to 519,819, 717,350.40 and 293,479.08

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Solution

The fourth proportional to 519,819, 717,350.40 and 293,479.08 is: 405,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,819 : 717,350.40 = 293,479.08 : x
  2. Step 2: Convert to fraction form
    519,819/717,350.40 = 293,479.08/x
  3. Step 3: Cross multiply
    519,819x = 717,350.40 × 293,479.08
  4. Step 4: Simplify right side
    519,819x = 210,527,335,429.63
  5. Step 5: Solve for x
    x = 210,527,335,429.63/519,819
  6. Step 6: Final answer
    x = 405,001.23

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1.5x scale

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.