Home / 376,776,838.90-519,952,468.74-209,509,508.82

Finding the Fourth Proportional to 376,776,838.90, 519,952,468.74 and 209,509,508.82

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Solution

The fourth proportional to 376,776,838.90, 519,952,468.74 and 209,509,508.82 is: 289,123,361.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,776,838.90 : 519,952,468.74 = 209,509,508.82 : x
  2. Step 2: Convert to fraction form
    376,776,838.90/519,952,468.74 = 209,509,508.82/x
  3. Step 3: Cross multiply
    376,776,838.90x = 519,952,468.74 × 209,509,508.82
  4. Step 4: Simplify right side
    376,776,838.90x = 108,934,986,334,416,256
  5. Step 5: Solve for x
    x = 108,934,986,334,416,256/376,776,838.90
  6. Step 6: Final answer
    x = 289,123,361.87

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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.