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Finding the Fourth Proportional to 663,882.32, 916,153.44 and 377,402.42

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Solution

The fourth proportional to 663,882.32, 916,153.44 and 377,402.42 is: 520,812.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,882.32 : 916,153.44 = 377,402.42 : x
  2. Step 2: Convert to fraction form
    663,882.32/916,153.44 = 377,402.42/x
  3. Step 3: Cross multiply
    663,882.32x = 916,153.44 × 377,402.42
  4. Step 4: Simplify right side
    663,882.32x = 345,758,525,347.33
  5. Step 5: Solve for x
    x = 345,758,525,347.33/663,882.32
  6. Step 6: Final answer
    x = 520,812.97

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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.