Home / 639,139,248.20-957,861,334.58-328,234,305.78

Finding the Fourth Proportional to 639,139,248.20, 957,861,334.58 and 328,234,305.78

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Solution

The fourth proportional to 639,139,248.20, 957,861,334.58 and 328,234,305.78 is: 491,916,199.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,139,248.20 : 957,861,334.58 = 328,234,305.78 : x
  2. Step 2: Convert to fraction form
    639,139,248.20/957,861,334.58 = 328,234,305.78/x
  3. Step 3: Cross multiply
    639,139,248.20x = 957,861,334.58 × 328,234,305.78
  4. Step 4: Simplify right side
    639,139,248.20x = 314,402,950,187,729,408
  5. Step 5: Solve for x
    x = 314,402,950,187,729,408/639,139,248.20
  6. Step 6: Final answer
    x = 491,916,199.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.