Home / 1,776,476.43-2,664,689.89-428,627.72

Finding the Fourth Proportional to 1,776,476.43, 2,664,689.89 and 428,627.72

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Solution

The fourth proportional to 1,776,476.43, 2,664,689.89 and 428,627.72 is: 642,935.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776,476.43 : 2,664,689.89 = 428,627.72 : x
  2. Step 2: Convert to fraction form
    1,776,476.43/2,664,689.89 = 428,627.72/x
  3. Step 3: Cross multiply
    1,776,476.43x = 2,664,689.89 × 428,627.72
  4. Step 4: Simplify right side
    1,776,476.43x = 1,142,159,952,057.75
  5. Step 5: Solve for x
    x = 1,142,159,952,057.75/1,776,476.43
  6. Step 6: Final answer
    x = 642,935.61

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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.