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Finding the Fourth Proportional to 922,117.20, 1,384,212.60 and 712,683.60

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Solution

The fourth proportional to 922,117.20, 1,384,212.60 and 712,683.60 is: 1,069,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,117.20 : 1,384,212.60 = 712,683.60 : x
  2. Step 2: Convert to fraction form
    922,117.20/1,384,212.60 = 712,683.60/x
  3. Step 3: Cross multiply
    922,117.20x = 1,384,212.60 × 712,683.60
  4. Step 4: Simplify right side
    922,117.20x = 986,505,618,933.36
  5. Step 5: Solve for x
    x = 986,505,618,933.36/922,117.20
  6. Step 6: Final answer
    x = 1,069,826.72

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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.