Home / 643,795.92-888,601.68-439,929.36

Finding the Fourth Proportional to 643,795.92, 888,601.68 and 439,929.36

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Solution

The fourth proportional to 643,795.92, 888,601.68 and 439,929.36 is: 607,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,795.92 : 888,601.68 = 439,929.36 : x
  2. Step 2: Convert to fraction form
    643,795.92/888,601.68 = 439,929.36/x
  3. Step 3: Cross multiply
    643,795.92x = 888,601.68 × 439,929.36
  4. Step 4: Simplify right side
    643,795.92x = 390,921,968,377.33
  5. Step 5: Solve for x
    x = 390,921,968,377.33/643,795.92
  6. Step 6: Final answer
    x = 607,214.11

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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.