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Finding the Fourth Proportional to 703,140.56, 970,331.60 and 380,849.84

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Solution

The fourth proportional to 703,140.56, 970,331.60 and 380,849.84 is: 525,571.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,140.56 : 970,331.60 = 380,849.84 : x
  2. Step 2: Convert to fraction form
    703,140.56/970,331.60 = 380,849.84/x
  3. Step 3: Cross multiply
    703,140.56x = 970,331.60 × 380,849.84
  4. Step 4: Simplify right side
    703,140.56x = 369,550,634,606.94
  5. Step 5: Solve for x
    x = 369,550,634,606.94/703,140.56
  6. Step 6: Final answer
    x = 525,571.49

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1.5x scale

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.