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Finding the Fourth Proportional to 891,842.74, 1,230,392.60 and 509,664.48

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Solution

The fourth proportional to 891,842.74, 1,230,392.60 and 509,664.48 is: 703,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,842.74 : 1,230,392.60 = 509,664.48 : x
  2. Step 2: Convert to fraction form
    891,842.74/1,230,392.60 = 509,664.48/x
  3. Step 3: Cross multiply
    891,842.74x = 1,230,392.60 × 509,664.48
  4. Step 4: Simplify right side
    891,842.74x = 627,087,404,674.85
  5. Step 5: Solve for x
    x = 627,087,404,674.85/891,842.74
  6. Step 6: Final answer
    x = 703,136.75

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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.