Home / 811,901.16-1,218,122.19-272,210.85

Finding the Fourth Proportional to 811,901.16, 1,218,122.19 and 272,210.85

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Solution

The fourth proportional to 811,901.16, 1,218,122.19 and 272,210.85 is: 408,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,901.16 : 1,218,122.19 = 272,210.85 : x
  2. Step 2: Convert to fraction form
    811,901.16/1,218,122.19 = 272,210.85/x
  3. Step 3: Cross multiply
    811,901.16x = 1,218,122.19 × 272,210.85
  4. Step 4: Simplify right side
    811,901.16x = 331,586,076,743.76
  5. Step 5: Solve for x
    x = 331,586,076,743.76/811,901.16
  6. Step 6: Final answer
    x = 408,406.95

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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.