Home / 1,215,669.20-1,677,621.96-679,125.20

Finding the Fourth Proportional to 1,215,669.20, 1,677,621.96 and 679,125.20

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Solution

The fourth proportional to 1,215,669.20, 1,677,621.96 and 679,125.20 is: 937,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,669.20 : 1,677,621.96 = 679,125.20 : x
  2. Step 2: Convert to fraction form
    1,215,669.20/1,677,621.96 = 679,125.20/x
  3. Step 3: Cross multiply
    1,215,669.20x = 1,677,621.96 × 679,125.20
  4. Step 4: Simplify right side
    1,215,669.20x = 1,139,315,349,109.39
  5. Step 5: Solve for x
    x = 1,139,315,349,109.39/1,215,669.20
  6. Step 6: Final answer
    x = 937,191.92

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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.