Home / 811,901.66-1,218,122.94-272,211.35

Finding the Fourth Proportional to 811,901.66, 1,218,122.94 and 272,211.35

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Solution

The fourth proportional to 811,901.66, 1,218,122.94 and 272,211.35 is: 408,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,901.66 : 1,218,122.94 = 272,211.35 : x
  2. Step 2: Convert to fraction form
    811,901.66/1,218,122.94 = 272,211.35/x
  3. Step 3: Cross multiply
    811,901.66x = 1,218,122.94 × 272,211.35
  4. Step 4: Simplify right side
    811,901.66x = 331,586,883,872.75
  5. Step 5: Solve for x
    x = 331,586,883,872.75/811,901.66
  6. Step 6: Final answer
    x = 408,407.70

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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.