Home / 1,153,166.94-1,591,222.05-643,890.78

Finding the Fourth Proportional to 1,153,166.94, 1,591,222.05 and 643,890.78

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Solution

The fourth proportional to 1,153,166.94, 1,591,222.05 and 643,890.78 is: 888,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,166.94 : 1,591,222.05 = 643,890.78 : x
  2. Step 2: Convert to fraction form
    1,153,166.94/1,591,222.05 = 643,890.78/x
  3. Step 3: Cross multiply
    1,153,166.94x = 1,591,222.05 × 643,890.78
  4. Step 4: Simplify right side
    1,153,166.94x = 1,024,573,206,927.70
  5. Step 5: Solve for x
    x = 1,024,573,206,927.70/1,153,166.94
  6. Step 6: Final answer
    x = 888,486.46

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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.