Home / 916,240.56-1,366,921.21-866,639.40

Finding the Fourth Proportional to 916,240.56, 1,366,921.21 and 866,639.40

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Solution

The fourth proportional to 916,240.56, 1,366,921.21 and 866,639.40 is: 1,292,922.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,240.56 : 1,366,921.21 = 866,639.40 : x
  2. Step 2: Convert to fraction form
    916,240.56/1,366,921.21 = 866,639.40/x
  3. Step 3: Cross multiply
    916,240.56x = 1,366,921.21 × 866,639.40
  4. Step 4: Simplify right side
    916,240.56x = 1,184,627,766,113.87
  5. Step 5: Solve for x
    x = 1,184,627,766,113.87/916,240.56
  6. Step 6: Final answer
    x = 1,292,922.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.