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Finding the Fourth Proportional to 726,998, 1,090,596.36 and 253,612.40

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Solution

The fourth proportional to 726,998, 1,090,596.36 and 253,612.40 is: 380,453.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,998 : 1,090,596.36 = 253,612.40 : x
  2. Step 2: Convert to fraction form
    726,998/1,090,596.36 = 253,612.40/x
  3. Step 3: Cross multiply
    726,998x = 1,090,596.36 × 253,612.40
  4. Step 4: Simplify right side
    726,998x = 276,588,760,290.86
  5. Step 5: Solve for x
    x = 276,588,760,290.86/726,998
  6. Step 6: Final answer
    x = 380,453.26

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1.5x scale

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.