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Finding the Fourth Proportional to 389,624.60, 584,436.90 and 360,464.60

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Solution

The fourth proportional to 389,624.60, 584,436.90 and 360,464.60 is: 540,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,624.60 : 584,436.90 = 360,464.60 : x
  2. Step 2: Convert to fraction form
    389,624.60/584,436.90 = 360,464.60/x
  3. Step 3: Cross multiply
    389,624.60x = 584,436.90 × 360,464.60
  4. Step 4: Simplify right side
    389,624.60x = 210,668,813,383.74
  5. Step 5: Solve for x
    x = 210,668,813,383.74/389,624.60
  6. Step 6: Final answer
    x = 540,696.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.