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Finding the Fourth Proportional to 703,303.11, 970,557.12 and 381,021.39

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Solution

The fourth proportional to 703,303.11, 970,557.12 and 381,021.39 is: 525,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,303.11 : 970,557.12 = 381,021.39 : x
  2. Step 2: Convert to fraction form
    703,303.11/970,557.12 = 381,021.39/x
  3. Step 3: Cross multiply
    703,303.11x = 970,557.12 × 381,021.39
  4. Step 4: Simplify right side
    703,303.11x = 369,803,022,936.80
  5. Step 5: Solve for x
    x = 369,803,022,936.80/703,303.11
  6. Step 6: Final answer
    x = 525,808.88

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Double scale
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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.