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Finding the Fourth Proportional to 1,842,480.45, 2,763,978.67 and 644,130.20

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Solution

The fourth proportional to 1,842,480.45, 2,763,978.67 and 644,130.20 is: 966,285.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842,480.45 : 2,763,978.67 = 644,130.20 : x
  2. Step 2: Convert to fraction form
    1,842,480.45/2,763,978.67 = 644,130.20/x
  3. Step 3: Cross multiply
    1,842,480.45x = 2,763,978.67 × 644,130.20
  4. Step 4: Simplify right side
    1,842,480.45x = 1,780,362,133,502.83
  5. Step 5: Solve for x
    x = 1,780,362,133,502.83/1,842,480.45
  6. Step 6: Final answer
    x = 966,285.49

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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.