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Finding the Fourth Proportional to 638,449.87, 881,033.49 and 348,054.52

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Solution

The fourth proportional to 638,449.87, 881,033.49 and 348,054.52 is: 480,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,449.87 : 881,033.49 = 348,054.52 : x
  2. Step 2: Convert to fraction form
    638,449.87/881,033.49 = 348,054.52/x
  3. Step 3: Cross multiply
    638,449.87x = 881,033.49 × 348,054.52
  4. Step 4: Simplify right side
    638,449.87x = 306,647,688,465.88
  5. Step 5: Solve for x
    x = 306,647,688,465.88/638,449.87
  6. Step 6: Final answer
    x = 480,300.34

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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.