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Finding the Fourth Proportional to 700,073.10, 966,221.49 and 405,681.54

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Solution

The fourth proportional to 700,073.10, 966,221.49 and 405,681.54 is: 559,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,073.10 : 966,221.49 = 405,681.54 : x
  2. Step 2: Convert to fraction form
    700,073.10/966,221.49 = 405,681.54/x
  3. Step 3: Cross multiply
    700,073.10x = 966,221.49 × 405,681.54
  4. Step 4: Simplify right side
    700,073.10x = 391,978,222,044.30
  5. Step 5: Solve for x
    x = 391,978,222,044.30/700,073.10
  6. Step 6: Final answer
    x = 559,910.42

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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.