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Finding the Fourth Proportional to 522,247.16, 720,829.29 and 318,410.48

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Solution

The fourth proportional to 522,247.16, 720,829.29 and 318,410.48 is: 439,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,247.16 : 720,829.29 = 318,410.48 : x
  2. Step 2: Convert to fraction form
    522,247.16/720,829.29 = 318,410.48/x
  3. Step 3: Cross multiply
    522,247.16x = 720,829.29 × 318,410.48
  4. Step 4: Simplify right side
    522,247.16x = 229,519,600,226.96
  5. Step 5: Solve for x
    x = 229,519,600,226.96/522,247.16
  6. Step 6: Final answer
    x = 439,484.63

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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.