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Finding the Fourth Proportional to 1,618,625.60, 2,427,938.40 and 776,974.40

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Solution

The fourth proportional to 1,618,625.60, 2,427,938.40 and 776,974.40 is: 1,165,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,625.60 : 2,427,938.40 = 776,974.40 : x
  2. Step 2: Convert to fraction form
    1,618,625.60/2,427,938.40 = 776,974.40/x
  3. Step 3: Cross multiply
    1,618,625.60x = 2,427,938.40 × 776,974.40
  4. Step 4: Simplify right side
    1,618,625.60x = 1,886,445,981,576.96
  5. Step 5: Solve for x
    x = 1,886,445,981,576.96/1,618,625.60
  6. Step 6: Final answer
    x = 1,165,461.60

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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.