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Finding the Fourth Proportional to 1,970,728.20, 2,955,401.10 and 1,023,784.20

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Solution

The fourth proportional to 1,970,728.20, 2,955,401.10 and 1,023,784.20 is: 1,535,317.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,728.20 : 2,955,401.10 = 1,023,784.20 : x
  2. Step 2: Convert to fraction form
    1,970,728.20/2,955,401.10 = 1,023,784.20/x
  3. Step 3: Cross multiply
    1,970,728.20x = 2,955,401.10 × 1,023,784.20
  4. Step 4: Simplify right side
    1,970,728.20x = 3,025,692,950,842.62
  5. Step 5: Solve for x
    x = 3,025,692,950,842.62/1,970,728.20
  6. Step 6: Final answer
    x = 1,535,317.22

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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.