Home / 1,290,679.38-1,781,180.64-709,927.02

Finding the Fourth Proportional to 1,290,679.38, 1,781,180.64 and 709,927.02

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Solution

The fourth proportional to 1,290,679.38, 1,781,180.64 and 709,927.02 is: 979,722.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,679.38 : 1,781,180.64 = 709,927.02 : x
  2. Step 2: Convert to fraction form
    1,290,679.38/1,781,180.64 = 709,927.02/x
  3. Step 3: Cross multiply
    1,290,679.38x = 1,781,180.64 × 709,927.02
  4. Step 4: Simplify right side
    1,290,679.38x = 1,264,508,263,836.89
  5. Step 5: Solve for x
    x = 1,264,508,263,836.89/1,290,679.38
  6. Step 6: Final answer
    x = 979,722.99

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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.