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Finding the Fourth Proportional to 869,123.60, 1,301,611.80 and 869,123.60

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Solution

The fourth proportional to 869,123.60, 1,301,611.80 and 869,123.60 is: 1,301,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,123.60 : 1,301,611.80 = 869,123.60 : x
  2. Step 2: Convert to fraction form
    869,123.60/1,301,611.80 = 869,123.60/x
  3. Step 3: Cross multiply
    869,123.60x = 1,301,611.80 × 869,123.60
  4. Step 4: Simplify right side
    869,123.60x = 1,131,261,533,418.48
  5. Step 5: Solve for x
    x = 1,131,261,533,418.48/869,123.60
  6. Step 6: Final answer
    x = 1,301,611.80

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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.