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Finding the Fourth Proportional to 1,299,738.60, 1,948,916.70 and 550,938.60

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Solution

The fourth proportional to 1,299,738.60, 1,948,916.70 and 550,938.60 is: 826,114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,738.60 : 1,948,916.70 = 550,938.60 : x
  2. Step 2: Convert to fraction form
    1,299,738.60/1,948,916.70 = 550,938.60/x
  3. Step 3: Cross multiply
    1,299,738.60x = 1,948,916.70 × 550,938.60
  4. Step 4: Simplify right side
    1,299,738.60x = 1,073,733,438,214.62
  5. Step 5: Solve for x
    x = 1,073,733,438,214.62/1,299,738.60
  6. Step 6: Final answer
    x = 826,114.91

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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.