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Finding the Fourth Proportional to 518,855.30, 715,928.46 and 292,500.80

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Solution

The fourth proportional to 518,855.30, 715,928.46 and 292,500.80 is: 403,599.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,855.30 : 715,928.46 = 292,500.80 : x
  2. Step 2: Convert to fraction form
    518,855.30/715,928.46 = 292,500.80/x
  3. Step 3: Cross multiply
    518,855.30x = 715,928.46 × 292,500.80
  4. Step 4: Simplify right side
    518,855.30x = 209,409,647,292.77
  5. Step 5: Solve for x
    x = 209,409,647,292.77/518,855.30
  6. Step 6: Final answer
    x = 403,599.32

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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.