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Finding the Fourth Proportional to 702,912.55, 970,017.96 and 380,623.60

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Solution

The fourth proportional to 702,912.55, 970,017.96 and 380,623.60 is: 525,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,912.55 : 970,017.96 = 380,623.60 : x
  2. Step 2: Convert to fraction form
    702,912.55/970,017.96 = 380,623.60/x
  3. Step 3: Cross multiply
    702,912.55x = 970,017.96 × 380,623.60
  4. Step 4: Simplify right side
    702,912.55x = 369,211,727,999.86
  5. Step 5: Solve for x
    x = 369,211,727,999.86/702,912.55
  6. Step 6: Final answer
    x = 525,259.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.