Home / 643,514.12-888,047.04-353,130.56

Finding the Fourth Proportional to 643,514.12, 888,047.04 and 353,130.56

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Solution

The fourth proportional to 643,514.12, 888,047.04 and 353,130.56 is: 487,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,514.12 : 888,047.04 = 353,130.56 : x
  2. Step 2: Convert to fraction form
    643,514.12/888,047.04 = 353,130.56/x
  3. Step 3: Cross multiply
    643,514.12x = 888,047.04 × 353,130.56
  4. Step 4: Simplify right side
    643,514.12x = 313,596,548,541.54
  5. Step 5: Solve for x
    x = 313,596,548,541.54/643,514.12
  6. Step 6: Final answer
    x = 487,318.83

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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.