Home / 986,211.30-1,361,012.58-556,491.72

Finding the Fourth Proportional to 986,211.30, 1,361,012.58 and 556,491.72

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Solution

The fourth proportional to 986,211.30, 1,361,012.58 and 556,491.72 is: 767,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,211.30 : 1,361,012.58 = 556,491.72 : x
  2. Step 2: Convert to fraction form
    986,211.30/1,361,012.58 = 556,491.72/x
  3. Step 3: Cross multiply
    986,211.30x = 1,361,012.58 × 556,491.72
  4. Step 4: Simplify right side
    986,211.30x = 757,392,231,585.84
  5. Step 5: Solve for x
    x = 757,392,231,585.84/986,211.30
  6. Step 6: Final answer
    x = 767,981.70

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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.