Home / 1,296,230.40-1,789,754.40-787,615.20

Finding the Fourth Proportional to 1,296,230.40, 1,789,754.40 and 787,615.20

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Solution

The fourth proportional to 1,296,230.40, 1,789,754.40 and 787,615.20 is: 1,087,490.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,230.40 : 1,789,754.40 = 787,615.20 : x
  2. Step 2: Convert to fraction form
    1,296,230.40/1,789,754.40 = 787,615.20/x
  3. Step 3: Cross multiply
    1,296,230.40x = 1,789,754.40 × 787,615.20
  4. Step 4: Simplify right side
    1,296,230.40x = 1,409,637,769,706.88
  5. Step 5: Solve for x
    x = 1,409,637,769,706.88/1,296,230.40
  6. Step 6: Final answer
    x = 1,087,490.13

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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.