Home / 1,223,311.25-1,688,169.57-686,767.25

Finding the Fourth Proportional to 1,223,311.25, 1,688,169.57 and 686,767.25

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Solution

The fourth proportional to 1,223,311.25, 1,688,169.57 and 686,767.25 is: 947,738.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,311.25 : 1,688,169.57 = 686,767.25 : x
  2. Step 2: Convert to fraction form
    1,223,311.25/1,688,169.57 = 686,767.25/x
  3. Step 3: Cross multiply
    1,223,311.25x = 1,688,169.57 × 686,767.25
  4. Step 4: Simplify right side
    1,223,311.25x = 1,159,379,573,122.58
  5. Step 5: Solve for x
    x = 1,159,379,573,122.58/1,223,311.25
  6. Step 6: Final answer
    x = 947,738.83

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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.