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Finding the Fourth Proportional to 977,270.80, 1,469,842.80 and 874,919.20

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Solution

The fourth proportional to 977,270.80, 1,469,842.80 and 874,919.20 is: 1,315,903.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,270.80 : 1,469,842.80 = 874,919.20 : x
  2. Step 2: Convert to fraction form
    977,270.80/1,469,842.80 = 874,919.20/x
  3. Step 3: Cross multiply
    977,270.80x = 1,469,842.80 × 874,919.20
  4. Step 4: Simplify right side
    977,270.80x = 1,285,993,686,701.76
  5. Step 5: Solve for x
    x = 1,285,993,686,701.76/977,270.80
  6. Step 6: Final answer
    x = 1,315,903.11

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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.