Home / 861,905,389.86-1,293,039,659.25-279,594,167.22

Finding the Fourth Proportional to 861,905,389.86, 1,293,039,659.25 and 279,594,167.22

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Solution

The fourth proportional to 861,905,389.86, 1,293,039,659.25 and 279,594,167.22 is: 419,450,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,905,389.86 : 1,293,039,659.25 = 279,594,167.22 : x
  2. Step 2: Convert to fraction form
    861,905,389.86/1,293,039,659.25 = 279,594,167.22/x
  3. Step 3: Cross multiply
    861,905,389.86x = 1,293,039,659.25 × 279,594,167.22
  4. Step 4: Simplify right side
    861,905,389.86x = 361,526,346,710,436,352
  5. Step 5: Solve for x
    x = 361,526,346,710,436,352/861,905,389.86
  6. Step 6: Final answer
    x = 419,450,151.91

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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.