Home / 811,809.74-1,120,280.67-449,233.35

Finding the Fourth Proportional to 811,809.74, 1,120,280.67 and 449,233.35

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Solution

The fourth proportional to 811,809.74, 1,120,280.67 and 449,233.35 is: 619,932.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,809.74 : 1,120,280.67 = 449,233.35 : x
  2. Step 2: Convert to fraction form
    811,809.74/1,120,280.67 = 449,233.35/x
  3. Step 3: Cross multiply
    811,809.74x = 1,120,280.67 × 449,233.35
  4. Step 4: Simplify right side
    811,809.74x = 503,267,438,324.34
  5. Step 5: Solve for x
    x = 503,267,438,324.34/811,809.74
  6. Step 6: Final answer
    x = 619,932.75

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1.5x scale

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.