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Finding the Fourth Proportional to 922,913.70, 1,288,929.90 and 922,913.70

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Solution

The fourth proportional to 922,913.70, 1,288,929.90 and 922,913.70 is: 1,288,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,913.70 : 1,288,929.90 = 922,913.70 : x
  2. Step 2: Convert to fraction form
    922,913.70/1,288,929.90 = 922,913.70/x
  3. Step 3: Cross multiply
    922,913.70x = 1,288,929.90 × 922,913.70
  4. Step 4: Simplify right side
    922,913.70x = 1,189,571,063,049.63
  5. Step 5: Solve for x
    x = 1,189,571,063,049.63/922,913.70
  6. Step 6: Final answer
    x = 1,288,929.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.