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Finding the Fourth Proportional to 479,011.52, 717,703.94 and 289,072.80

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Solution

The fourth proportional to 479,011.52, 717,703.94 and 289,072.80 is: 433,118.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,011.52 : 717,703.94 = 289,072.80 : x
  2. Step 2: Convert to fraction form
    479,011.52/717,703.94 = 289,072.80/x
  3. Step 3: Cross multiply
    479,011.52x = 717,703.94 × 289,072.80
  4. Step 4: Simplify right side
    479,011.52x = 207,468,688,229.51
  5. Step 5: Solve for x
    x = 207,468,688,229.51/479,011.52
  6. Step 6: Final answer
    x = 433,118.37

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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.