Home / 1,389,431.71-1,917,374.52-769,264.49

Finding the Fourth Proportional to 1,389,431.71, 1,917,374.52 and 769,264.49

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Solution

The fourth proportional to 1,389,431.71, 1,917,374.52 and 769,264.49 is: 1,061,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,431.71 : 1,917,374.52 = 769,264.49 : x
  2. Step 2: Convert to fraction form
    1,389,431.71/1,917,374.52 = 769,264.49/x
  3. Step 3: Cross multiply
    1,389,431.71x = 1,917,374.52 × 769,264.49
  4. Step 4: Simplify right side
    1,389,431.71x = 1,474,968,132,266.79
  5. Step 5: Solve for x
    x = 1,474,968,132,266.79/1,389,431.71
  6. Step 6: Final answer
    x = 1,061,562.16

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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.