Home / 820,507.40-1,231,106.70-446,798.60

Finding the Fourth Proportional to 820,507.40, 1,231,106.70 and 446,798.60

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Solution

The fourth proportional to 820,507.40, 1,231,106.70 and 446,798.60 is: 670,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,507.40 : 1,231,106.70 = 446,798.60 : x
  2. Step 2: Convert to fraction form
    820,507.40/1,231,106.70 = 446,798.60/x
  3. Step 3: Cross multiply
    820,507.40x = 1,231,106.70 × 446,798.60
  4. Step 4: Simplify right side
    820,507.40x = 550,056,750,010.62
  5. Step 5: Solve for x
    x = 550,056,750,010.62/820,507.40
  6. Step 6: Final answer
    x = 670,386.09

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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.