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Finding the Fourth Proportional to 1,899,632.64, 2,849,981.67 and 763,192.86

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Solution

The fourth proportional to 1,899,632.64, 2,849,981.67 and 763,192.86 is: 1,145,003.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899,632.64 : 2,849,981.67 = 763,192.86 : x
  2. Step 2: Convert to fraction form
    1,899,632.64/2,849,981.67 = 763,192.86/x
  3. Step 3: Cross multiply
    1,899,632.64x = 2,849,981.67 × 763,192.86
  4. Step 4: Simplify right side
    1,899,632.64x = 2,175,085,661,674.88
  5. Step 5: Solve for x
    x = 2,175,085,661,674.88/1,899,632.64
  6. Step 6: Final answer
    x = 1,145,003.31

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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.