Home / 1,355,096.73-1,869,900.88-811,220.61

Finding the Fourth Proportional to 1,355,096.73, 1,869,900.88 and 811,220.61

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Solution

The fourth proportional to 1,355,096.73, 1,869,900.88 and 811,220.61 is: 1,119,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,096.73 : 1,869,900.88 = 811,220.61 : x
  2. Step 2: Convert to fraction form
    1,355,096.73/1,869,900.88 = 811,220.61/x
  3. Step 3: Cross multiply
    1,355,096.73x = 1,869,900.88 × 811,220.61
  4. Step 4: Simplify right side
    1,355,096.73x = 1,516,902,135,159.84
  5. Step 5: Solve for x
    x = 1,516,902,135,159.84/1,355,096.73
  6. Step 6: Final answer
    x = 1,119,405.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.