Home / 861,905,376.27-1,293,039,638.78-279,594,153.63

Finding the Fourth Proportional to 861,905,376.27, 1,293,039,638.78 and 279,594,153.63

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Solution

The fourth proportional to 861,905,376.27, 1,293,039,638.78 and 279,594,153.63 is: 419,450,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,905,376.27 : 1,293,039,638.78 = 279,594,153.63 : x
  2. Step 2: Convert to fraction form
    861,905,376.27/1,293,039,638.78 = 279,594,153.63/x
  3. Step 3: Cross multiply
    861,905,376.27x = 1,293,039,638.78 × 279,594,153.63
  4. Step 4: Simplify right side
    861,905,376.27x = 361,526,323,413,337,088
  5. Step 5: Solve for x
    x = 361,526,323,413,337,088/861,905,376.27
  6. Step 6: Final answer
    x = 419,450,131.50

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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.