Home / 861,905,376.52-1,293,039,639.15-279,594,153.88

Finding the Fourth Proportional to 861,905,376.52, 1,293,039,639.15 and 279,594,153.88

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Solution

The fourth proportional to 861,905,376.52, 1,293,039,639.15 and 279,594,153.88 is: 419,450,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,905,376.52 : 1,293,039,639.15 = 279,594,153.88 : x
  2. Step 2: Convert to fraction form
    861,905,376.52/1,293,039,639.15 = 279,594,153.88/x
  3. Step 3: Cross multiply
    861,905,376.52x = 1,293,039,639.15 × 279,594,153.88
  4. Step 4: Simplify right side
    861,905,376.52x = 361,526,323,841,444,800
  5. Step 5: Solve for x
    x = 361,526,323,841,444,800/861,905,376.52
  6. Step 6: Final answer
    x = 419,450,131.87

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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.