Home / 1,216,849.91-1,679,184.96-665,456.81

Finding the Fourth Proportional to 1,216,849.91, 1,679,184.96 and 665,456.81

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Solution

The fourth proportional to 1,216,849.91, 1,679,184.96 and 665,456.81 is: 918,293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,849.91 : 1,679,184.96 = 665,456.81 : x
  2. Step 2: Convert to fraction form
    1,216,849.91/1,679,184.96 = 665,456.81/x
  3. Step 3: Cross multiply
    1,216,849.91x = 1,679,184.96 × 665,456.81
  4. Step 4: Simplify right side
    1,216,849.91x = 1,117,425,058,485.65
  5. Step 5: Solve for x
    x = 1,117,425,058,485.65/1,216,849.91
  6. Step 6: Final answer
    x = 918,293.25

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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.