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Finding the Fourth Proportional to 703,004.79, 970,141.78 and 380,707.51

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Solution

The fourth proportional to 703,004.79, 970,141.78 and 380,707.51 is: 525,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,004.79 : 970,141.78 = 380,707.51 : x
  2. Step 2: Convert to fraction form
    703,004.79/970,141.78 = 380,707.51/x
  3. Step 3: Cross multiply
    703,004.79x = 970,141.78 × 380,707.51
  4. Step 4: Simplify right side
    703,004.79x = 369,340,261,410.77
  5. Step 5: Solve for x
    x = 369,340,261,410.77/703,004.79
  6. Step 6: Final answer
    x = 525,373.75

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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.