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Finding the Fourth Proportional to 703,074.77, 970,238.35 and 380,777.49

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Solution

The fourth proportional to 703,074.77, 970,238.35 and 380,777.49 is: 525,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,074.77 : 970,238.35 = 380,777.49 : x
  2. Step 2: Convert to fraction form
    703,074.77/970,238.35 = 380,777.49/x
  3. Step 3: Cross multiply
    703,074.77x = 970,238.35 × 380,777.49
  4. Step 4: Simplify right side
    703,074.77x = 369,444,924,090.71
  5. Step 5: Solve for x
    x = 369,444,924,090.71/703,074.77
  6. Step 6: Final answer
    x = 525,470.32

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Double scale
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Similar ratio
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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.