Home / 498,220.83-687,237.89-355,027.14

Finding the Fourth Proportional to 498,220.83, 687,237.89 and 355,027.14

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Solution

The fourth proportional to 498,220.83, 687,237.89 and 355,027.14 is: 489,718.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,220.83 : 687,237.89 = 355,027.14 : x
  2. Step 2: Convert to fraction form
    498,220.83/687,237.89 = 355,027.14/x
  3. Step 3: Cross multiply
    498,220.83x = 687,237.89 × 355,027.14
  4. Step 4: Simplify right side
    498,220.83x = 243,988,100,811.20
  5. Step 5: Solve for x
    x = 243,988,100,811.20/498,220.83
  6. Step 6: Final answer
    x = 489,718.79

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1.5x scale

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.