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Finding the Fourth Proportional to 664,078.07, 916,357.07 and 373,684.57

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Solution

The fourth proportional to 664,078.07, 916,357.07 and 373,684.57 is: 515,644.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,078.07 : 916,357.07 = 373,684.57 : x
  2. Step 2: Convert to fraction form
    664,078.07/916,357.07 = 373,684.57/x
  3. Step 3: Cross multiply
    664,078.07x = 916,357.07 × 373,684.57
  4. Step 4: Simplify right side
    664,078.07x = 342,428,501,729.99
  5. Step 5: Solve for x
    x = 342,428,501,729.99/664,078.07
  6. Step 6: Final answer
    x = 515,644.95

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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.