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Finding the Fourth Proportional to 681,251,737.81, 940,127,776.04 and 367,985,953.49

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Solution

The fourth proportional to 681,251,737.81, 940,127,776.04 and 367,985,953.49 is: 507,820,819.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,251,737.81 : 940,127,776.04 = 367,985,953.49 : x
  2. Step 2: Convert to fraction form
    681,251,737.81/940,127,776.04 = 367,985,953.49/x
  3. Step 3: Cross multiply
    681,251,737.81x = 940,127,776.04 × 367,985,953.49
  4. Step 4: Simplify right side
    681,251,737.81x = 345,953,816,066,672,640
  5. Step 5: Solve for x
    x = 345,953,816,066,672,640/681,251,737.81
  6. Step 6: Final answer
    x = 507,820,819.92

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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.