Home / 1,222,122.16-1,686,731.28-712,824.52

Finding the Fourth Proportional to 1,222,122.16, 1,686,731.28 and 712,824.52

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Solution

The fourth proportional to 1,222,122.16, 1,686,731.28 and 712,824.52 is: 983,816.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,122.16 : 1,686,731.28 = 712,824.52 : x
  2. Step 2: Convert to fraction form
    1,222,122.16/1,686,731.28 = 712,824.52/x
  3. Step 3: Cross multiply
    1,222,122.16x = 1,686,731.28 × 712,824.52
  4. Step 4: Simplify right side
    1,222,122.16x = 1,202,343,415,034.99
  5. Step 5: Solve for x
    x = 1,202,343,415,034.99/1,222,122.16
  6. Step 6: Final answer
    x = 983,816.07

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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.