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Finding the Fourth Proportional to 522,246.16, 720,827.91 and 318,409.48

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Solution

The fourth proportional to 522,246.16, 720,827.91 and 318,409.48 is: 439,483.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,246.16 : 720,827.91 = 318,409.48 : x
  2. Step 2: Convert to fraction form
    522,246.16/720,827.91 = 318,409.48/x
  3. Step 3: Cross multiply
    522,246.16x = 720,827.91 × 318,409.48
  4. Step 4: Simplify right side
    522,246.16x = 229,518,439,992.59
  5. Step 5: Solve for x
    x = 229,518,439,992.59/522,246.16
  6. Step 6: Final answer
    x = 439,483.25

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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.