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Finding the Fourth Proportional to 669,813.84, 924,082.20 and 379,358.64

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Solution

The fourth proportional to 669,813.84, 924,082.20 and 379,358.64 is: 523,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,813.84 : 924,082.20 = 379,358.64 : x
  2. Step 2: Convert to fraction form
    669,813.84/924,082.20 = 379,358.64/x
  3. Step 3: Cross multiply
    669,813.84x = 924,082.20 × 379,358.64
  4. Step 4: Simplify right side
    669,813.84x = 350,558,566,640.21
  5. Step 5: Solve for x
    x = 350,558,566,640.21/669,813.84
  6. Step 6: Final answer
    x = 523,367.16

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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.