Home / 811,450.12-1,217,285.92-338,024.77

Finding the Fourth Proportional to 811,450.12, 1,217,285.92 and 338,024.77

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Solution

The fourth proportional to 811,450.12, 1,217,285.92 and 338,024.77 is: 507,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,450.12 : 1,217,285.92 = 338,024.77 : x
  2. Step 2: Convert to fraction form
    811,450.12/1,217,285.92 = 338,024.77/x
  3. Step 3: Cross multiply
    811,450.12x = 1,217,285.92 × 338,024.77
  4. Step 4: Simplify right side
    811,450.12x = 411,472,788,229.14
  5. Step 5: Solve for x
    x = 411,472,788,229.14/811,450.12
  6. Step 6: Final answer
    x = 507,083.28

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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.