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Finding the Fourth Proportional to 664,400.90, 996,601.35 and 660,464.30

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Solution

The fourth proportional to 664,400.90, 996,601.35 and 660,464.30 is: 990,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,400.90 : 996,601.35 = 660,464.30 : x
  2. Step 2: Convert to fraction form
    664,400.90/996,601.35 = 660,464.30/x
  3. Step 3: Cross multiply
    664,400.90x = 996,601.35 × 660,464.30
  4. Step 4: Simplify right side
    664,400.90x = 658,219,613,006.81
  5. Step 5: Solve for x
    x = 658,219,613,006.81/664,400.90
  6. Step 6: Final answer
    x = 990,696.45

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1.5x scale

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.