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Finding the Fourth Proportional to 669,000.84, 923,208 and 378,607.04

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Solution

The fourth proportional to 669,000.84, 923,208 and 378,607.04 is: 522,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,000.84 : 923,208 = 378,607.04 : x
  2. Step 2: Convert to fraction form
    669,000.84/923,208 = 378,607.04/x
  3. Step 3: Cross multiply
    669,000.84x = 923,208 × 378,607.04
  4. Step 4: Simplify right side
    669,000.84x = 349,533,048,184.32
  5. Step 5: Solve for x
    x = 349,533,048,184.32/669,000.84
  6. Step 6: Final answer
    x = 522,470.27

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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.