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Finding the Fourth Proportional to 668,873.64, 923,061.22 and 382,420.52

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Solution

The fourth proportional to 668,873.64, 923,061.22 and 382,420.52 is: 527,749.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,873.64 : 923,061.22 = 382,420.52 : x
  2. Step 2: Convert to fraction form
    668,873.64/923,061.22 = 382,420.52/x
  3. Step 3: Cross multiply
    668,873.64x = 923,061.22 × 382,420.52
  4. Step 4: Simplify right side
    668,873.64x = 352,997,551,744.23
  5. Step 5: Solve for x
    x = 352,997,551,744.23/668,873.64
  6. Step 6: Final answer
    x = 527,749.23

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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.