Home / 1,223,640.81-1,688,622.80-679,826.79

Finding the Fourth Proportional to 1,223,640.81, 1,688,622.80 and 679,826.79

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Solution

The fourth proportional to 1,223,640.81, 1,688,622.80 and 679,826.79 is: 938,160.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,640.81 : 1,688,622.80 = 679,826.79 : x
  2. Step 2: Convert to fraction form
    1,223,640.81/1,688,622.80 = 679,826.79/x
  3. Step 3: Cross multiply
    1,223,640.81x = 1,688,622.80 × 679,826.79
  4. Step 4: Simplify right side
    1,223,640.81x = 1,147,971,014,245.68
  5. Step 5: Solve for x
    x = 1,147,971,014,245.68/1,223,640.81
  6. Step 6: Final answer
    x = 938,160.12

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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.