Home / 643,401.80-887,886.20-349,047.16

Finding the Fourth Proportional to 643,401.80, 887,886.20 and 349,047.16

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Solution

The fourth proportional to 643,401.80, 887,886.20 and 349,047.16 is: 481,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,401.80 : 887,886.20 = 349,047.16 : x
  2. Step 2: Convert to fraction form
    643,401.80/887,886.20 = 349,047.16/x
  3. Step 3: Cross multiply
    643,401.80x = 887,886.20 × 349,047.16
  4. Step 4: Simplify right side
    643,401.80x = 309,914,156,513.19
  5. Step 5: Solve for x
    x = 309,914,156,513.19/643,401.80
  6. Step 6: Final answer
    x = 481,680.59

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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.