Home / 989,449.83-1,483,877.88-420,826.59

Finding the Fourth Proportional to 989,449.83, 1,483,877.88 and 420,826.59

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Solution

The fourth proportional to 989,449.83, 1,483,877.88 and 420,826.59 is: 631,113.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,449.83 : 1,483,877.88 = 420,826.59 : x
  2. Step 2: Convert to fraction form
    989,449.83/1,483,877.88 = 420,826.59/x
  3. Step 3: Cross multiply
    989,449.83x = 1,483,877.88 × 420,826.59
  4. Step 4: Simplify right side
    989,449.83x = 624,455,268,216.83
  5. Step 5: Solve for x
    x = 624,455,268,216.83/989,449.83
  6. Step 6: Final answer
    x = 631,113.62

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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.