Home / 521,746.20-782,181.90-272,428.20

Finding the Fourth Proportional to 521,746.20, 782,181.90 and 272,428.20

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Solution

The fourth proportional to 521,746.20, 782,181.90 and 272,428.20 is: 408,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,746.20 : 782,181.90 = 272,428.20 : x
  2. Step 2: Convert to fraction form
    521,746.20/782,181.90 = 272,428.20/x
  3. Step 3: Cross multiply
    521,746.20x = 782,181.90 × 272,428.20
  4. Step 4: Simplify right side
    521,746.20x = 213,088,407,089.58
  5. Step 5: Solve for x
    x = 213,088,407,089.58/521,746.20
  6. Step 6: Final answer
    x = 408,413.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.