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Finding the Fourth Proportional to 664,208.78, 916,532.42 and 373,764.24

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Solution

The fourth proportional to 664,208.78, 916,532.42 and 373,764.24 is: 515,752.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,208.78 : 916,532.42 = 373,764.24 : x
  2. Step 2: Convert to fraction form
    664,208.78/916,532.42 = 373,764.24/x
  3. Step 3: Cross multiply
    664,208.78x = 916,532.42 × 373,764.24
  4. Step 4: Simplify right side
    664,208.78x = 342,567,041,527.84
  5. Step 5: Solve for x
    x = 342,567,041,527.84/664,208.78
  6. Step 6: Final answer
    x = 515,752.06

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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.