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Finding the Fourth Proportional to 702,403.39, 969,319.09 and 380,113.40

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Solution

The fourth proportional to 702,403.39, 969,319.09 and 380,113.40 is: 524,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,403.39 : 969,319.09 = 380,113.40 : x
  2. Step 2: Convert to fraction form
    702,403.39/969,319.09 = 380,113.40/x
  3. Step 3: Cross multiply
    702,403.39x = 969,319.09 × 380,113.40
  4. Step 4: Simplify right side
    702,403.39x = 368,451,168,237.64
  5. Step 5: Solve for x
    x = 368,451,168,237.64/702,403.39
  6. Step 6: Final answer
    x = 524,557.79

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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.