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Finding the Fourth Proportional to 703,003.79, 970,140.40 and 380,706.51

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Solution

The fourth proportional to 703,003.79, 970,140.40 and 380,706.51 is: 525,372.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,003.79 : 970,140.40 = 380,706.51 : x
  2. Step 2: Convert to fraction form
    703,003.79/970,140.40 = 380,706.51/x
  3. Step 3: Cross multiply
    703,003.79x = 970,140.40 × 380,706.51
  4. Step 4: Simplify right side
    703,003.79x = 369,338,768,580.26
  5. Step 5: Solve for x
    x = 369,338,768,580.26/703,003.79
  6. Step 6: Final answer
    x = 525,372.37

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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.