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Finding the Fourth Proportional to 922,642.60, 1,383,704.70 and 291,749.80

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Solution

The fourth proportional to 922,642.60, 1,383,704.70 and 291,749.80 is: 437,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,642.60 : 1,383,704.70 = 291,749.80 : x
  2. Step 2: Convert to fraction form
    922,642.60/1,383,704.70 = 291,749.80/x
  3. Step 3: Cross multiply
    922,642.60x = 1,383,704.70 × 291,749.80
  4. Step 4: Simplify right side
    922,642.60x = 403,695,569,484.06
  5. Step 5: Solve for x
    x = 403,695,569,484.06/922,642.60
  6. Step 6: Final answer
    x = 437,542.74

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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.