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Finding the Fourth Proportional to 892,107,964.22, 1,231,036,813.82 and 515,788,696.40

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Solution

The fourth proportional to 892,107,964.22, 1,231,036,813.82 and 515,788,696.40 is: 711,746,670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,107,964.22 : 1,231,036,813.82 = 515,788,696.40 : x
  2. Step 2: Convert to fraction form
    892,107,964.22/1,231,036,813.82 = 515,788,696.40/x
  3. Step 3: Cross multiply
    892,107,964.22x = 1,231,036,813.82 × 515,788,696.40
  4. Step 4: Simplify right side
    892,107,964.22x = 634,954,873,418,048,384
  5. Step 5: Solve for x
    x = 634,954,873,418,048,384/892,107,964.22
  6. Step 6: Final answer
    x = 711,746,670.68

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1.5x scale

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.