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Finding the Fourth Proportional to 1,571,160, 2,168,200.80 and 855,768

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Solution

The fourth proportional to 1,571,160, 2,168,200.80 and 855,768 is: 1,180,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571,160 : 2,168,200.80 = 855,768 : x
  2. Step 2: Convert to fraction form
    1,571,160/2,168,200.80 = 855,768/x
  3. Step 3: Cross multiply
    1,571,160x = 2,168,200.80 × 855,768
  4. Step 4: Simplify right side
    1,571,160x = 1,855,476,862,214.40
  5. Step 5: Solve for x
    x = 1,855,476,862,214.40/1,571,160
  6. Step 6: Final answer
    x = 1,180,959.84

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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.