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Finding the Fourth Proportional to 922,671.90, 1,384,007.85 and 840,003.30

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Solution

The fourth proportional to 922,671.90, 1,384,007.85 and 840,003.30 is: 1,260,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,671.90 : 1,384,007.85 = 840,003.30 : x
  2. Step 2: Convert to fraction form
    922,671.90/1,384,007.85 = 840,003.30/x
  3. Step 3: Cross multiply
    922,671.90x = 1,384,007.85 × 840,003.30
  4. Step 4: Simplify right side
    922,671.90x = 1,162,571,161,225.91
  5. Step 5: Solve for x
    x = 1,162,571,161,225.91/922,671.90
  6. Step 6: Final answer
    x = 1,260,004.95

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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.