Home / 817,746.20-1,226,181.90-343,896.20

Finding the Fourth Proportional to 817,746.20, 1,226,181.90 and 343,896.20

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Solution

The fourth proportional to 817,746.20, 1,226,181.90 and 343,896.20 is: 515,660.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,746.20 : 1,226,181.90 = 343,896.20 : x
  2. Step 2: Convert to fraction form
    817,746.20/1,226,181.90 = 343,896.20/x
  3. Step 3: Cross multiply
    817,746.20x = 1,226,181.90 × 343,896.20
  4. Step 4: Simplify right side
    817,746.20x = 421,679,295,918.78
  5. Step 5: Solve for x
    x = 421,679,295,918.78/817,746.20
  6. Step 6: Final answer
    x = 515,660.36

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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.