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Finding the Fourth Proportional to 1,569,979.20, 2,354,968.80 and 388,027.20

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Solution

The fourth proportional to 1,569,979.20, 2,354,968.80 and 388,027.20 is: 582,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569,979.20 : 2,354,968.80 = 388,027.20 : x
  2. Step 2: Convert to fraction form
    1,569,979.20/2,354,968.80 = 388,027.20/x
  3. Step 3: Cross multiply
    1,569,979.20x = 2,354,968.80 × 388,027.20
  4. Step 4: Simplify right side
    1,569,979.20x = 913,791,949,551.36
  5. Step 5: Solve for x
    x = 913,791,949,551.36/1,569,979.20
  6. Step 6: Final answer
    x = 582,040.80

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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.