Home / 498,222.58-687,240.30-355,028.89

Finding the Fourth Proportional to 498,222.58, 687,240.30 and 355,028.89

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Solution

The fourth proportional to 498,222.58, 687,240.30 and 355,028.89 is: 489,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,222.58 : 687,240.30 = 355,028.89 : x
  2. Step 2: Convert to fraction form
    498,222.58/687,240.30 = 355,028.89/x
  3. Step 3: Cross multiply
    498,222.58x = 687,240.30 × 355,028.89
  4. Step 4: Simplify right side
    498,222.58x = 243,990,160,872.27
  5. Step 5: Solve for x
    x = 243,990,160,872.27/498,222.58
  6. Step 6: Final answer
    x = 489,721.20

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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.