Home / 1,291,068.46-1,781,669.73-718,108.68

Finding the Fourth Proportional to 1,291,068.46, 1,781,669.73 and 718,108.68

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Solution

The fourth proportional to 1,291,068.46, 1,781,669.73 and 718,108.68 is: 990,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,068.46 : 1,781,669.73 = 718,108.68 : x
  2. Step 2: Convert to fraction form
    1,291,068.46/1,781,669.73 = 718,108.68/x
  3. Step 3: Cross multiply
    1,291,068.46x = 1,781,669.73 × 718,108.68
  4. Step 4: Simplify right side
    1,291,068.46x = 1,279,432,498,006.26
  5. Step 5: Solve for x
    x = 1,279,432,498,006.26/1,291,068.46
  6. Step 6: Final answer
    x = 990,987.34

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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.