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Finding the Fourth Proportional to 703,635.68, 971,020.64 and 381,345.69

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Solution

The fourth proportional to 703,635.68, 971,020.64 and 381,345.69 is: 526,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,635.68 : 971,020.64 = 381,345.69 : x
  2. Step 2: Convert to fraction form
    703,635.68/971,020.64 = 381,345.69/x
  3. Step 3: Cross multiply
    703,635.68x = 971,020.64 × 381,345.69
  4. Step 4: Simplify right side
    703,635.68x = 370,294,535,965.04
  5. Step 5: Solve for x
    x = 370,294,535,965.04/703,635.68
  6. Step 6: Final answer
    x = 526,258.90

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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.