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Finding the Fourth Proportional to 1,977,289.64, 2,728,553.64 and 1,117,798.64

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Solution

The fourth proportional to 1,977,289.64, 2,728,553.64 and 1,117,798.64 is: 1,542,502.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,289.64 : 2,728,553.64 = 1,117,798.64 : x
  2. Step 2: Convert to fraction form
    1,977,289.64/2,728,553.64 = 1,117,798.64/x
  3. Step 3: Cross multiply
    1,977,289.64x = 2,728,553.64 × 1,117,798.64
  4. Step 4: Simplify right side
    1,977,289.64x = 3,049,973,547,959.05
  5. Step 5: Solve for x
    x = 3,049,973,547,959.05/1,977,289.64
  6. Step 6: Final answer
    x = 1,542,502.16

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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.