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Finding the Fourth Proportional to 528,611.40, 793,062.90 and 262,380.60

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Solution

The fourth proportional to 528,611.40, 793,062.90 and 262,380.60 is: 393,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,611.40 : 793,062.90 = 262,380.60 : x
  2. Step 2: Convert to fraction form
    528,611.40/793,062.90 = 262,380.60/x
  3. Step 3: Cross multiply
    528,611.40x = 793,062.90 × 262,380.60
  4. Step 4: Simplify right side
    528,611.40x = 208,084,319,539.74
  5. Step 5: Solve for x
    x = 208,084,319,539.74/528,611.40
  6. Step 6: Final answer
    x = 393,643.27

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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.