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Finding the Fourth Proportional to 400,584.60, 603,688.76 and 360,643.50

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Solution

The fourth proportional to 400,584.60, 603,688.76 and 360,643.50 is: 543,496.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,584.60 : 603,688.76 = 360,643.50 : x
  2. Step 2: Convert to fraction form
    400,584.60/603,688.76 = 360,643.50/x
  3. Step 3: Cross multiply
    400,584.60x = 603,688.76 × 360,643.50
  4. Step 4: Simplify right side
    400,584.60x = 217,716,427,317.06
  5. Step 5: Solve for x
    x = 217,716,427,317.06/400,584.60
  6. Step 6: Final answer
    x = 543,496.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.