Home / 1,286,105.64-1,929,157.44-387,547.38

Finding the Fourth Proportional to 1,286,105.64, 1,929,157.44 and 387,547.38

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Solution

The fourth proportional to 1,286,105.64, 1,929,157.44 and 387,547.38 is: 581,320.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,105.64 : 1,929,157.44 = 387,547.38 : x
  2. Step 2: Convert to fraction form
    1,286,105.64/1,929,157.44 = 387,547.38/x
  3. Step 3: Cross multiply
    1,286,105.64x = 1,929,157.44 × 387,547.38
  4. Step 4: Simplify right side
    1,286,105.64x = 747,639,917,260.55
  5. Step 5: Solve for x
    x = 747,639,917,260.55/1,286,105.64
  6. Step 6: Final answer
    x = 581,320.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.