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Finding the Fourth Proportional to 1,395,562.56, 1,926,127.68 and 822,569.28

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Solution

The fourth proportional to 1,395,562.56, 1,926,127.68 and 822,569.28 is: 1,135,293.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,562.56 : 1,926,127.68 = 822,569.28 : x
  2. Step 2: Convert to fraction form
    1,395,562.56/1,926,127.68 = 822,569.28/x
  3. Step 3: Cross multiply
    1,395,562.56x = 1,926,127.68 × 822,569.28
  4. Step 4: Simplify right side
    1,395,562.56x = 1,584,373,458,925.67
  5. Step 5: Solve for x
    x = 1,584,373,458,925.67/1,395,562.56
  6. Step 6: Final answer
    x = 1,135,293.75

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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.