Home / 1,252,981.36-1,729,115.47-680,021.72

Finding the Fourth Proportional to 1,252,981.36, 1,729,115.47 and 680,021.72

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Solution

The fourth proportional to 1,252,981.36, 1,729,115.47 and 680,021.72 is: 938,430.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,981.36 : 1,729,115.47 = 680,021.72 : x
  2. Step 2: Convert to fraction form
    1,252,981.36/1,729,115.47 = 680,021.72/x
  3. Step 3: Cross multiply
    1,252,981.36x = 1,729,115.47 × 680,021.72
  4. Step 4: Simplify right side
    1,252,981.36x = 1,175,836,075,988.01
  5. Step 5: Solve for x
    x = 1,175,836,075,988.01/1,252,981.36
  6. Step 6: Final answer
    x = 938,430.62

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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.