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Finding the Fourth Proportional to 1,807,921.71, 2,494,962.59 and 992,201.30

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Solution

The fourth proportional to 1,807,921.71, 2,494,962.59 and 992,201.30 is: 1,369,254.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,921.71 : 2,494,962.59 = 992,201.30 : x
  2. Step 2: Convert to fraction form
    1,807,921.71/2,494,962.59 = 992,201.30/x
  3. Step 3: Cross multiply
    1,807,921.71x = 2,494,962.59 × 992,201.30
  4. Step 4: Simplify right side
    1,807,921.71x = 2,475,505,107,813.55
  5. Step 5: Solve for x
    x = 2,475,505,107,813.55/1,807,921.71
  6. Step 6: Final answer
    x = 1,369,254.59

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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.