Home / 702,938.20-1,053,629.70-387,621.40

Finding the Fourth Proportional to 702,938.20, 1,053,629.70 and 387,621.40

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Solution

The fourth proportional to 702,938.20, 1,053,629.70 and 387,621.40 is: 581,003.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,938.20 : 1,053,629.70 = 387,621.40 : x
  2. Step 2: Convert to fraction form
    702,938.20/1,053,629.70 = 387,621.40/x
  3. Step 3: Cross multiply
    702,938.20x = 1,053,629.70 × 387,621.40
  4. Step 4: Simplify right side
    702,938.20x = 408,409,419,395.58
  5. Step 5: Solve for x
    x = 408,409,419,395.58/702,938.20
  6. Step 6: Final answer
    x = 581,003.31

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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.