Home / 729,919.14-1,007,142.30-407,579.64

Finding the Fourth Proportional to 729,919.14, 1,007,142.30 and 407,579.64

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Solution

The fourth proportional to 729,919.14, 1,007,142.30 and 407,579.64 is: 562,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,919.14 : 1,007,142.30 = 407,579.64 : x
  2. Step 2: Convert to fraction form
    729,919.14/1,007,142.30 = 407,579.64/x
  3. Step 3: Cross multiply
    729,919.14x = 1,007,142.30 × 407,579.64
  4. Step 4: Simplify right side
    729,919.14x = 410,490,696,062.77
  5. Step 5: Solve for x
    x = 410,490,696,062.77/729,919.14
  6. Step 6: Final answer
    x = 562,378.32

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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.