Home / 892,107,963.72-1,231,036,813.13-515,788,695.90

Finding the Fourth Proportional to 892,107,963.72, 1,231,036,813.13 and 515,788,695.90

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Solution

The fourth proportional to 892,107,963.72, 1,231,036,813.13 and 515,788,695.90 is: 711,746,669.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,107,963.72 : 1,231,036,813.13 = 515,788,695.90 : x
  2. Step 2: Convert to fraction form
    892,107,963.72/1,231,036,813.13 = 515,788,695.90/x
  3. Step 3: Cross multiply
    892,107,963.72x = 1,231,036,813.13 × 515,788,695.90
  4. Step 4: Simplify right side
    892,107,963.72x = 634,954,872,446,635,776
  5. Step 5: Solve for x
    x = 634,954,872,446,635,776/892,107,963.72
  6. Step 6: Final answer
    x = 711,746,669.99

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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.