Home / 1,208,404.90-1,667,641.55-664,582.78

Finding the Fourth Proportional to 1,208,404.90, 1,667,641.55 and 664,582.78

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Solution

The fourth proportional to 1,208,404.90, 1,667,641.55 and 664,582.78 is: 917,147.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,404.90 : 1,667,641.55 = 664,582.78 : x
  2. Step 2: Convert to fraction form
    1,208,404.90/1,667,641.55 = 664,582.78/x
  3. Step 3: Cross multiply
    1,208,404.90x = 1,667,641.55 × 664,582.78
  4. Step 4: Simplify right side
    1,208,404.90x = 1,108,285,849,004.30
  5. Step 5: Solve for x
    x = 1,108,285,849,004.30/1,208,404.90
  6. Step 6: Final answer
    x = 917,147.77

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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.