Home / 702,942.20-1,053,635.70-387,625.40

Finding the Fourth Proportional to 702,942.20, 1,053,635.70 and 387,625.40

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Solution

The fourth proportional to 702,942.20, 1,053,635.70 and 387,625.40 is: 581,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,942.20 : 1,053,635.70 = 387,625.40 : x
  2. Step 2: Convert to fraction form
    702,942.20/1,053,635.70 = 387,625.40/x
  3. Step 3: Cross multiply
    702,942.20x = 1,053,635.70 × 387,625.40
  4. Step 4: Simplify right side
    702,942.20x = 408,415,959,666.78
  5. Step 5: Solve for x
    x = 408,415,959,666.78/702,942.20
  6. Step 6: Final answer
    x = 581,009.31

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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.