Home / 1,137,972.86-1,707,213.49-428,007.05

Finding the Fourth Proportional to 1,137,972.86, 1,707,213.49 and 428,007.05

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Solution

The fourth proportional to 1,137,972.86, 1,707,213.49 and 428,007.05 is: 642,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,972.86 : 1,707,213.49 = 428,007.05 : x
  2. Step 2: Convert to fraction form
    1,137,972.86/1,707,213.49 = 428,007.05/x
  3. Step 3: Cross multiply
    1,137,972.86x = 1,707,213.49 × 428,007.05
  4. Step 4: Simplify right side
    1,137,972.86x = 730,699,399,969.02
  5. Step 5: Solve for x
    x = 730,699,399,969.02/1,137,972.86
  6. Step 6: Final answer
    x = 642,106.18

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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.