Home / 659,719.52-910,435.20-387,783.68

Finding the Fourth Proportional to 659,719.52, 910,435.20 and 387,783.68

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Solution

The fourth proportional to 659,719.52, 910,435.20 and 387,783.68 is: 535,154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,719.52 : 910,435.20 = 387,783.68 : x
  2. Step 2: Convert to fraction form
    659,719.52/910,435.20 = 387,783.68/x
  3. Step 3: Cross multiply
    659,719.52x = 910,435.20 × 387,783.68
  4. Step 4: Simplify right side
    659,719.52x = 353,051,912,257.54
  5. Step 5: Solve for x
    x = 353,051,912,257.54/659,719.52
  6. Step 6: Final answer
    x = 535,154.56

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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.