Home / 498,222.08-687,239.60-355,028.40

Finding the Fourth Proportional to 498,222.08, 687,239.60 and 355,028.40

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Solution

The fourth proportional to 498,222.08, 687,239.60 and 355,028.40 is: 489,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,222.08 : 687,239.60 = 355,028.40 : x
  2. Step 2: Convert to fraction form
    498,222.08/687,239.60 = 355,028.40/x
  3. Step 3: Cross multiply
    498,222.08x = 687,239.60 × 355,028.40
  4. Step 4: Simplify right side
    498,222.08x = 243,989,575,604.64
  5. Step 5: Solve for x
    x = 243,989,575,604.64/498,222.08
  6. Step 6: Final answer
    x = 489,720.52

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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.