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Finding the Fourth Proportional to 664,145.80, 916,531.41 and 362,339.80

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Solution

The fourth proportional to 664,145.80, 916,531.41 and 362,339.80 is: 500,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,145.80 : 916,531.41 = 362,339.80 : x
  2. Step 2: Convert to fraction form
    664,145.80/916,531.41 = 362,339.80/x
  3. Step 3: Cross multiply
    664,145.80x = 916,531.41 × 362,339.80
  4. Step 4: Simplify right side
    664,145.80x = 332,095,807,793.12
  5. Step 5: Solve for x
    x = 332,095,807,793.12/664,145.80
  6. Step 6: Final answer
    x = 500,034.49

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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.