Home / 840,713.86-1,159,881.96-647,180.76

Finding the Fourth Proportional to 840,713.86, 1,159,881.96 and 647,180.76

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Solution

The fourth proportional to 840,713.86, 1,159,881.96 and 647,180.76 is: 892,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,713.86 : 1,159,881.96 = 647,180.76 : x
  2. Step 2: Convert to fraction form
    840,713.86/1,159,881.96 = 647,180.76/x
  3. Step 3: Cross multiply
    840,713.86x = 1,159,881.96 × 647,180.76
  4. Step 4: Simplify right side
    840,713.86x = 750,653,288,383.09
  5. Step 5: Solve for x
    x = 750,653,288,383.09/840,713.86
  6. Step 6: Final answer
    x = 892,876.07

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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.