Home / 1,216,847.28-1,679,181.34-665,454.17

Finding the Fourth Proportional to 1,216,847.28, 1,679,181.34 and 665,454.17

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Solution

The fourth proportional to 1,216,847.28, 1,679,181.34 and 665,454.17 is: 918,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,847.28 : 1,679,181.34 = 665,454.17 : x
  2. Step 2: Convert to fraction form
    1,216,847.28/1,679,181.34 = 665,454.17/x
  3. Step 3: Cross multiply
    1,216,847.28x = 1,679,181.34 × 665,454.17
  4. Step 4: Simplify right side
    1,216,847.28x = 1,117,418,228,671.23
  5. Step 5: Solve for x
    x = 1,117,418,228,671.23/1,216,847.28
  6. Step 6: Final answer
    x = 918,289.62

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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.