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Finding the Fourth Proportional to 669,655.44, 923,862.78 and 383,022.36

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Solution

The fourth proportional to 669,655.44, 923,862.78 and 383,022.36 is: 528,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,655.44 : 923,862.78 = 383,022.36 : x
  2. Step 2: Convert to fraction form
    669,655.44/923,862.78 = 383,022.36/x
  3. Step 3: Cross multiply
    669,655.44x = 923,862.78 × 383,022.36
  4. Step 4: Simplify right side
    669,655.44x = 353,860,102,311.76
  5. Step 5: Solve for x
    x = 353,860,102,311.76/669,655.44
  6. Step 6: Final answer
    x = 528,421.16

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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.