Home / 811,040.28-1,216,432.81-510,601.15

Finding the Fourth Proportional to 811,040.28, 1,216,432.81 and 510,601.15

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Solution

The fourth proportional to 811,040.28, 1,216,432.81 and 510,601.15 is: 765,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,040.28 : 1,216,432.81 = 510,601.15 : x
  2. Step 2: Convert to fraction form
    811,040.28/1,216,432.81 = 510,601.15/x
  3. Step 3: Cross multiply
    811,040.28x = 1,216,432.81 × 510,601.15
  4. Step 4: Simplify right side
    811,040.28x = 621,111,991,683.73
  5. Step 5: Solve for x
    x = 621,111,991,683.73/811,040.28
  6. Step 6: Final answer
    x = 765,821.39

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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.