Home / 811,096.17-1,216,999.91-384,939.78

Finding the Fourth Proportional to 811,096.17, 1,216,999.91 and 384,939.78

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Solution

The fourth proportional to 811,096.17, 1,216,999.91 and 384,939.78 is: 577,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,096.17 : 1,216,999.91 = 384,939.78 : x
  2. Step 2: Convert to fraction form
    811,096.17/1,216,999.91 = 384,939.78/x
  3. Step 3: Cross multiply
    811,096.17x = 1,216,999.91 × 384,939.78
  4. Step 4: Simplify right side
    811,096.17x = 468,471,677,615.42
  5. Step 5: Solve for x
    x = 468,471,677,615.42/811,096.17
  6. Step 6: Final answer
    x = 577,578.46

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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.