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Finding the Fourth Proportional to 664,019.20, 916,347.52 and 362,218.24

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Solution

The fourth proportional to 664,019.20, 916,347.52 and 362,218.24 is: 499,861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,019.20 : 916,347.52 = 362,218.24 : x
  2. Step 2: Convert to fraction form
    664,019.20/916,347.52 = 362,218.24/x
  3. Step 3: Cross multiply
    664,019.20x = 916,347.52 × 362,218.24
  4. Step 4: Simplify right side
    664,019.20x = 331,917,785,922.77
  5. Step 5: Solve for x
    x = 331,917,785,922.77/664,019.20
  6. Step 6: Final answer
    x = 499,861.73

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Double scale
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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.