Home / 811,092,718.32-1,216,153,213.80-258,156,307.44

Finding the Fourth Proportional to 811,092,718.32, 1,216,153,213.80 and 258,156,307.44

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Solution

The fourth proportional to 811,092,718.32, 1,216,153,213.80 and 258,156,307.44 is: 387,079,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,092,718.32 : 1,216,153,213.80 = 258,156,307.44 : x
  2. Step 2: Convert to fraction form
    811,092,718.32/1,216,153,213.80 = 258,156,307.44/x
  3. Step 3: Cross multiply
    811,092,718.32x = 1,216,153,213.80 × 258,156,307.44
  4. Step 4: Simplify right side
    811,092,718.32x = 313,957,622,955,896,832
  5. Step 5: Solve for x
    x = 313,957,622,955,896,832/811,092,718.32
  6. Step 6: Final answer
    x = 387,079,819.44

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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.