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Finding the Fourth Proportional to 922,653.60, 1,383,721.20 and 291,760.80

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Solution

The fourth proportional to 922,653.60, 1,383,721.20 and 291,760.80 is: 437,559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,653.60 : 1,383,721.20 = 291,760.80 : x
  2. Step 2: Convert to fraction form
    922,653.60/1,383,721.20 = 291,760.80/x
  3. Step 3: Cross multiply
    922,653.60x = 1,383,721.20 × 291,760.80
  4. Step 4: Simplify right side
    922,653.60x = 403,715,604,288.96
  5. Step 5: Solve for x
    x = 403,715,604,288.96/922,653.60
  6. Step 6: Final answer
    x = 437,559.24

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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.