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Finding the Fourth Proportional to 502,673,618.88, 693,695,977.98 and 276,638,627.28

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Solution

The fourth proportional to 502,673,618.88, 693,695,977.98 and 276,638,627.28 is: 381,764,818.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,673,618.88 : 693,695,977.98 = 276,638,627.28 : x
  2. Step 2: Convert to fraction form
    502,673,618.88/693,695,977.98 = 276,638,627.28/x
  3. Step 3: Cross multiply
    502,673,618.88x = 693,695,977.98 × 276,638,627.28
  4. Step 4: Simplify right side
    502,673,618.88x = 191,903,103,098,044,288
  5. Step 5: Solve for x
    x = 191,903,103,098,044,288/502,673,618.88
  6. Step 6: Final answer
    x = 381,764,818.94

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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.