Home / 1,216,861.42-1,679,200.82-665,468.32

Finding the Fourth Proportional to 1,216,861.42, 1,679,200.82 and 665,468.32

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Solution

The fourth proportional to 1,216,861.42, 1,679,200.82 and 665,468.32 is: 918,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,861.42 : 1,679,200.82 = 665,468.32 : x
  2. Step 2: Convert to fraction form
    1,216,861.42/1,679,200.82 = 665,468.32/x
  3. Step 3: Cross multiply
    1,216,861.42x = 1,679,200.82 × 665,468.32
  4. Step 4: Simplify right side
    1,216,861.42x = 1,117,454,948,628.02
  5. Step 5: Solve for x
    x = 1,117,454,948,628.02/1,216,861.42
  6. Step 6: Final answer
    x = 918,309.13

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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.