Home / 638,181.20-957,271.80-520,083.20

Finding the Fourth Proportional to 638,181.20, 957,271.80 and 520,083.20

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Solution

The fourth proportional to 638,181.20, 957,271.80 and 520,083.20 is: 780,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,181.20 : 957,271.80 = 520,083.20 : x
  2. Step 2: Convert to fraction form
    638,181.20/957,271.80 = 520,083.20/x
  3. Step 3: Cross multiply
    638,181.20x = 957,271.80 × 520,083.20
  4. Step 4: Simplify right side
    638,181.20x = 497,860,981,013.76
  5. Step 5: Solve for x
    x = 497,860,981,013.76/638,181.20
  6. Step 6: Final answer
    x = 780,124.80

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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.