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Finding the Fourth Proportional to 879,249.60, 1,318,874.40 and 802,267.20

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Solution

The fourth proportional to 879,249.60, 1,318,874.40 and 802,267.20 is: 1,203,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,249.60 : 1,318,874.40 = 802,267.20 : x
  2. Step 2: Convert to fraction form
    879,249.60/1,318,874.40 = 802,267.20/x
  3. Step 3: Cross multiply
    879,249.60x = 1,318,874.40 × 802,267.20
  4. Step 4: Simplify right side
    879,249.60x = 1,058,089,672,039.68
  5. Step 5: Solve for x
    x = 1,058,089,672,039.68/879,249.60
  6. Step 6: Final answer
    x = 1,203,400.80

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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.