Home / 643,904.88-888,592.17-402,327.54

Finding the Fourth Proportional to 643,904.88, 888,592.17 and 402,327.54

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Solution

The fourth proportional to 643,904.88, 888,592.17 and 402,327.54 is: 555,214.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,904.88 : 888,592.17 = 402,327.54 : x
  2. Step 2: Convert to fraction form
    643,904.88/888,592.17 = 402,327.54/x
  3. Step 3: Cross multiply
    643,904.88x = 888,592.17 × 402,327.54
  4. Step 4: Simplify right side
    643,904.88x = 357,505,101,819.36
  5. Step 5: Solve for x
    x = 357,505,101,819.36/643,904.88
  6. Step 6: Final answer
    x = 555,214.15

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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.