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Finding the Fourth Proportional to 806,600, 1,113,108 and 448,988.48

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Solution

The fourth proportional to 806,600, 1,113,108 and 448,988.48 is: 619,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,600 : 1,113,108 = 448,988.48 : x
  2. Step 2: Convert to fraction form
    806,600/1,113,108 = 448,988.48/x
  3. Step 3: Cross multiply
    806,600x = 1,113,108 × 448,988.48
  4. Step 4: Simplify right side
    806,600x = 499,772,668,995.84
  5. Step 5: Solve for x
    x = 499,772,668,995.84/806,600
  6. Step 6: Final answer
    x = 619,604.10

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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.