Home / 1,261,380.77-1,740,159.38-771,371.71

Finding the Fourth Proportional to 1,261,380.77, 1,740,159.38 and 771,371.71

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Solution

The fourth proportional to 1,261,380.77, 1,740,159.38 and 771,371.71 is: 1,064,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,380.77 : 1,740,159.38 = 771,371.71 : x
  2. Step 2: Convert to fraction form
    1,261,380.77/1,740,159.38 = 771,371.71/x
  3. Step 3: Cross multiply
    1,261,380.77x = 1,740,159.38 × 771,371.71
  4. Step 4: Simplify right side
    1,261,380.77x = 1,342,309,716,623.14
  5. Step 5: Solve for x
    x = 1,342,309,716,623.14/1,261,380.77
  6. Step 6: Final answer
    x = 1,064,159.01

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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.