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Finding the Fourth Proportional to 551,267.41, 825,695.52 and 390,857.11

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Solution

The fourth proportional to 551,267.41, 825,695.52 and 390,857.11 is: 585,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,267.41 : 825,695.52 = 390,857.11 : x
  2. Step 2: Convert to fraction form
    551,267.41/825,695.52 = 390,857.11/x
  3. Step 3: Cross multiply
    551,267.41x = 825,695.52 × 390,857.11
  4. Step 4: Simplify right side
    551,267.41x = 322,728,962,622.91
  5. Step 5: Solve for x
    x = 322,728,962,622.91/551,267.41
  6. Step 6: Final answer
    x = 585,430.88

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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.