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Finding the Fourth Proportional to 703,078.65, 970,243.70 and 380,781.37

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Solution

The fourth proportional to 703,078.65, 970,243.70 and 380,781.37 is: 525,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,078.65 : 970,243.70 = 380,781.37 : x
  2. Step 2: Convert to fraction form
    703,078.65/970,243.70 = 380,781.37/x
  3. Step 3: Cross multiply
    703,078.65x = 970,243.70 × 380,781.37
  4. Step 4: Simplify right side
    703,078.65x = 369,450,720,468.65
  5. Step 5: Solve for x
    x = 369,450,720,468.65/703,078.65
  6. Step 6: Final answer
    x = 525,475.67

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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.