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Finding the Fourth Proportional to 491,081.20, 677,775.50 and 362,686.68

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Solution

The fourth proportional to 491,081.20, 677,775.50 and 362,686.68 is: 500,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,081.20 : 677,775.50 = 362,686.68 : x
  2. Step 2: Convert to fraction form
    491,081.20/677,775.50 = 362,686.68/x
  3. Step 3: Cross multiply
    491,081.20x = 677,775.50 × 362,686.68
  4. Step 4: Simplify right side
    491,081.20x = 245,820,145,426.98
  5. Step 5: Solve for x
    x = 245,820,145,426.98/491,081.20
  6. Step 6: Final answer
    x = 500,569.25

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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.