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Finding the Fourth Proportional to 722,706.60, 1,084,059.90 and 368,412.60

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Solution

The fourth proportional to 722,706.60, 1,084,059.90 and 368,412.60 is: 552,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,706.60 : 1,084,059.90 = 368,412.60 : x
  2. Step 2: Convert to fraction form
    722,706.60/1,084,059.90 = 368,412.60/x
  3. Step 3: Cross multiply
    722,706.60x = 1,084,059.90 × 368,412.60
  4. Step 4: Simplify right side
    722,706.60x = 399,381,326,314.74
  5. Step 5: Solve for x
    x = 399,381,326,314.74/722,706.60
  6. Step 6: Final answer
    x = 552,618.90

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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.