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Finding the Fourth Proportional to 703,062.77, 970,221.80 and 380,765.49

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Solution

The fourth proportional to 703,062.77, 970,221.80 and 380,765.49 is: 525,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,062.77 : 970,221.80 = 380,765.49 : x
  2. Step 2: Convert to fraction form
    703,062.77/970,221.80 = 380,765.49/x
  3. Step 3: Cross multiply
    703,062.77x = 970,221.80 × 380,765.49
  4. Step 4: Simplify right side
    703,062.77x = 369,426,977,181.86
  5. Step 5: Solve for x
    x = 369,426,977,181.86/703,062.77
  6. Step 6: Final answer
    x = 525,453.77

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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.