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Finding the Fourth Proportional to 667,275.24, 920,906.04 and 380,838.72

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Solution

The fourth proportional to 667,275.24, 920,906.04 and 380,838.72 is: 525,595.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,275.24 : 920,906.04 = 380,838.72 : x
  2. Step 2: Convert to fraction form
    667,275.24/920,906.04 = 380,838.72/x
  3. Step 3: Cross multiply
    667,275.24x = 920,906.04 × 380,838.72
  4. Step 4: Simplify right side
    667,275.24x = 350,716,677,513.87
  5. Step 5: Solve for x
    x = 350,716,677,513.87/667,275.24
  6. Step 6: Final answer
    x = 525,595.22

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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.