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Finding the Fourth Proportional to 1,197,212.40, 1,796,693.40 and 842,918.40

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Solution

The fourth proportional to 1,197,212.40, 1,796,693.40 and 842,918.40 is: 1,264,993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197,212.40 : 1,796,693.40 = 842,918.40 : x
  2. Step 2: Convert to fraction form
    1,197,212.40/1,796,693.40 = 842,918.40/x
  3. Step 3: Cross multiply
    1,197,212.40x = 1,796,693.40 × 842,918.40
  4. Step 4: Simplify right side
    1,197,212.40x = 1,514,465,926,018.56
  5. Step 5: Solve for x
    x = 1,514,465,926,018.56/1,197,212.40
  6. Step 6: Final answer
    x = 1,264,993.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.