Home / 1,223,006.64-1,687,477.21-739,561.78

Finding the Fourth Proportional to 1,223,006.64, 1,687,477.21 and 739,561.78

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Solution

The fourth proportional to 1,223,006.64, 1,687,477.21 and 739,561.78 is: 1,020,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,006.64 : 1,687,477.21 = 739,561.78 : x
  2. Step 2: Convert to fraction form
    1,223,006.64/1,687,477.21 = 739,561.78/x
  3. Step 3: Cross multiply
    1,223,006.64x = 1,687,477.21 × 739,561.78
  4. Step 4: Simplify right side
    1,223,006.64x = 1,247,993,649,137.03
  5. Step 5: Solve for x
    x = 1,247,993,649,137.03/1,223,006.64
  6. Step 6: Final answer
    x = 1,020,430.80

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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.