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Finding the Fourth Proportional to 703,135.56, 970,386.72 and 397,268.16

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Solution

The fourth proportional to 703,135.56, 970,386.72 and 397,268.16 is: 548,263.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,135.56 : 970,386.72 = 397,268.16 : x
  2. Step 2: Convert to fraction form
    703,135.56/970,386.72 = 397,268.16/x
  3. Step 3: Cross multiply
    703,135.56x = 970,386.72 × 397,268.16
  4. Step 4: Simplify right side
    703,135.56x = 385,503,746,742.84
  5. Step 5: Solve for x
    x = 385,503,746,742.84/703,135.56
  6. Step 6: Final answer
    x = 548,263.76

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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.