Home / 1,221,351.48-1,685,666.79-677,662.20

Finding the Fourth Proportional to 1,221,351.48, 1,685,666.79 and 677,662.20

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Solution

The fourth proportional to 1,221,351.48, 1,685,666.79 and 677,662.20 is: 935,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,351.48 : 1,685,666.79 = 677,662.20 : x
  2. Step 2: Convert to fraction form
    1,221,351.48/1,685,666.79 = 677,662.20/x
  3. Step 3: Cross multiply
    1,221,351.48x = 1,685,666.79 × 677,662.20
  4. Step 4: Simplify right side
    1,221,351.48x = 1,142,312,665,378.34
  5. Step 5: Solve for x
    x = 1,142,312,665,378.34/1,221,351.48
  6. Step 6: Final answer
    x = 935,285.77

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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.