Home / 1,223,543.70-1,688,760.18-679,866.30

Finding the Fourth Proportional to 1,223,543.70, 1,688,760.18 and 679,866.30

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Solution

The fourth proportional to 1,223,543.70, 1,688,760.18 and 679,866.30 is: 938,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,543.70 : 1,688,760.18 = 679,866.30 : x
  2. Step 2: Convert to fraction form
    1,223,543.70/1,688,760.18 = 679,866.30/x
  3. Step 3: Cross multiply
    1,223,543.70x = 1,688,760.18 × 679,866.30
  4. Step 4: Simplify right side
    1,223,543.70x = 1,148,131,135,163.93
  5. Step 5: Solve for x
    x = 1,148,131,135,163.93/1,223,543.70
  6. Step 6: Final answer
    x = 938,365.45

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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.