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Finding the Fourth Proportional to 669,660.12, 923,870.52 and 379,205.01

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Solution

The fourth proportional to 669,660.12, 923,870.52 and 379,205.01 is: 523,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,660.12 : 923,870.52 = 379,205.01 : x
  2. Step 2: Convert to fraction form
    669,660.12/923,870.52 = 379,205.01/x
  3. Step 3: Cross multiply
    669,660.12x = 923,870.52 × 379,205.01
  4. Step 4: Simplify right side
    669,660.12x = 350,336,329,775.31
  5. Step 5: Solve for x
    x = 350,336,329,775.31/669,660.12
  6. Step 6: Final answer
    x = 523,155.43

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1.5x scale

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.