Home / 811,804.70-1,217,783.85-220,828.70

Finding the Fourth Proportional to 811,804.70, 1,217,783.85 and 220,828.70

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Solution

The fourth proportional to 811,804.70, 1,217,783.85 and 220,828.70 is: 331,263.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,804.70 : 1,217,783.85 = 220,828.70 : x
  2. Step 2: Convert to fraction form
    811,804.70/1,217,783.85 = 220,828.70/x
  3. Step 3: Cross multiply
    811,804.70x = 1,217,783.85 × 220,828.70
  4. Step 4: Simplify right side
    811,804.70x = 268,921,624,476.50
  5. Step 5: Solve for x
    x = 268,921,624,476.50/811,804.70
  6. Step 6: Final answer
    x = 331,263.94

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Double scale
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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.