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Finding the Fourth Proportional to 717,453, 990,085.14 and 415,821.96

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Solution

The fourth proportional to 717,453, 990,085.14 and 415,821.96 is: 573,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,453 : 990,085.14 = 415,821.96 : x
  2. Step 2: Convert to fraction form
    717,453/990,085.14 = 415,821.96/x
  3. Step 3: Cross multiply
    717,453x = 990,085.14 × 415,821.96
  4. Step 4: Simplify right side
    717,453x = 411,699,143,481.67
  5. Step 5: Solve for x
    x = 411,699,143,481.67/717,453
  6. Step 6: Final answer
    x = 573,834.30

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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.