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Finding the Fourth Proportional to 703,220.80, 1,055,608.80 and 437,281.60

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Solution

The fourth proportional to 703,220.80, 1,055,608.80 and 437,281.60 is: 656,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,220.80 : 1,055,608.80 = 437,281.60 : x
  2. Step 2: Convert to fraction form
    703,220.80/1,055,608.80 = 437,281.60/x
  3. Step 3: Cross multiply
    703,220.80x = 1,055,608.80 × 437,281.60
  4. Step 4: Simplify right side
    703,220.80x = 461,598,305,038.08
  5. Step 5: Solve for x
    x = 461,598,305,038.08/703,220.80
  6. Step 6: Final answer
    x = 656,405.93

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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.