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Finding the Fourth Proportional to 810,323.82, 1,118,256.84 and 447,744.51

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Solution

The fourth proportional to 810,323.82, 1,118,256.84 and 447,744.51 is: 617,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,323.82 : 1,118,256.84 = 447,744.51 : x
  2. Step 2: Convert to fraction form
    810,323.82/1,118,256.84 = 447,744.51/x
  3. Step 3: Cross multiply
    810,323.82x = 1,118,256.84 × 447,744.51
  4. Step 4: Simplify right side
    810,323.82x = 500,693,360,879.95
  5. Step 5: Solve for x
    x = 500,693,360,879.95/810,323.82
  6. Step 6: Final answer
    x = 617,892.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.