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Finding the Fourth Proportional to 520,225.15, 779,025.53 and 415,249.15

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Solution

The fourth proportional to 520,225.15, 779,025.53 and 415,249.15 is: 621,826.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,225.15 : 779,025.53 = 415,249.15 : x
  2. Step 2: Convert to fraction form
    520,225.15/779,025.53 = 415,249.15/x
  3. Step 3: Cross multiply
    520,225.15x = 779,025.53 × 415,249.15
  4. Step 4: Simplify right side
    520,225.15x = 323,489,687,084.55
  5. Step 5: Solve for x
    x = 323,489,687,084.55/520,225.15
  6. Step 6: Final answer
    x = 621,826.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.