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Finding the Fourth Proportional to 450,366, 621,259.32 and 289,245.60

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Solution

The fourth proportional to 450,366, 621,259.32 and 289,245.60 is: 399,001.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,366 : 621,259.32 = 289,245.60 : x
  2. Step 2: Convert to fraction form
    450,366/621,259.32 = 289,245.60/x
  3. Step 3: Cross multiply
    450,366x = 621,259.32 × 289,245.60
  4. Step 4: Simplify right side
    450,366x = 179,696,524,768.99
  5. Step 5: Solve for x
    x = 179,696,524,768.99/450,366
  6. Step 6: Final answer
    x = 399,001.09

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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.