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Finding the Fourth Proportional to 922,110.10, 1,383,359.55 and 389,356.90

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Solution

The fourth proportional to 922,110.10, 1,383,359.55 and 389,356.90 is: 584,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,110.10 : 1,383,359.55 = 389,356.90 : x
  2. Step 2: Convert to fraction form
    922,110.10/1,383,359.55 = 389,356.90/x
  3. Step 3: Cross multiply
    922,110.10x = 1,383,359.55 × 389,356.90
  4. Step 4: Simplify right side
    922,110.10x = 538,620,585,973.40
  5. Step 5: Solve for x
    x = 538,620,585,973.40/922,110.10
  6. Step 6: Final answer
    x = 584,117.43

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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.