Home / 643,610.67-888,345.90-439,743.93

Finding the Fourth Proportional to 643,610.67, 888,345.90 and 439,743.93

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Solution

The fourth proportional to 643,610.67, 888,345.90 and 439,743.93 is: 606,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,610.67 : 888,345.90 = 439,743.93 : x
  2. Step 2: Convert to fraction form
    643,610.67/888,345.90 = 439,743.93/x
  3. Step 3: Cross multiply
    643,610.67x = 888,345.90 × 439,743.93
  4. Step 4: Simplify right side
    643,610.67x = 390,644,717,265.39
  5. Step 5: Solve for x
    x = 390,644,717,265.39/643,610.67
  6. Step 6: Final answer
    x = 606,958.11

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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.