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Finding the Fourth Proportional to 717,519, 990,176.26 and 415,887.96

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Solution

The fourth proportional to 717,519, 990,176.26 and 415,887.96 is: 573,925.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,519 : 990,176.26 = 415,887.96 : x
  2. Step 2: Convert to fraction form
    717,519/990,176.26 = 415,887.96/x
  3. Step 3: Cross multiply
    717,519x = 990,176.26 × 415,887.96
  4. Step 4: Simplify right side
    717,519x = 411,802,384,811.83
  5. Step 5: Solve for x
    x = 411,802,384,811.83/717,519
  6. Step 6: Final answer
    x = 573,925.41

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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.