Home / 1,188,220.20-1,782,330.30-1,057,583.40

Finding the Fourth Proportional to 1,188,220.20, 1,782,330.30 and 1,057,583.40

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Solution

The fourth proportional to 1,188,220.20, 1,782,330.30 and 1,057,583.40 is: 1,586,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,220.20 : 1,782,330.30 = 1,057,583.40 : x
  2. Step 2: Convert to fraction form
    1,188,220.20/1,782,330.30 = 1,057,583.40/x
  3. Step 3: Cross multiply
    1,188,220.20x = 1,782,330.30 × 1,057,583.40
  4. Step 4: Simplify right side
    1,188,220.20x = 1,884,962,938,597.02
  5. Step 5: Solve for x
    x = 1,884,962,938,597.02/1,188,220.20
  6. Step 6: Final answer
    x = 1,586,375.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.