Home / 1,314,979.79-1,814,974.29-771,290.78

Finding the Fourth Proportional to 1,314,979.79, 1,814,974.29 and 771,290.78

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Solution

The fourth proportional to 1,314,979.79, 1,814,974.29 and 771,290.78 is: 1,064,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,979.79 : 1,814,974.29 = 771,290.78 : x
  2. Step 2: Convert to fraction form
    1,314,979.79/1,814,974.29 = 771,290.78/x
  3. Step 3: Cross multiply
    1,314,979.79x = 1,814,974.29 × 771,290.78
  4. Step 4: Simplify right side
    1,314,979.79x = 1,399,872,926,739.17
  5. Step 5: Solve for x
    x = 1,399,872,926,739.17/1,314,979.79
  6. Step 6: Final answer
    x = 1,064,558.51

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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.