Home / 1,006,380.50-1,388,805.09-553,661.78

Finding the Fourth Proportional to 1,006,380.50, 1,388,805.09 and 553,661.78

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Solution

The fourth proportional to 1,006,380.50, 1,388,805.09 and 553,661.78 is: 764,053.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006,380.50 : 1,388,805.09 = 553,661.78 : x
  2. Step 2: Convert to fraction form
    1,006,380.50/1,388,805.09 = 553,661.78/x
  3. Step 3: Cross multiply
    1,006,380.50x = 1,388,805.09 × 553,661.78
  4. Step 4: Simplify right side
    1,006,380.50x = 768,928,298,202.46
  5. Step 5: Solve for x
    x = 768,928,298,202.46/1,006,380.50
  6. Step 6: Final answer
    x = 764,053.26

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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.