Home / 1,043.48-1,439.70-623.63

Finding the Fourth Proportional to 1,043.48, 1,439.70 and 623.63

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Solution

The fourth proportional to 1,043.48, 1,439.70 and 623.63 is: 860.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.48 : 1,439.70 = 623.63 : x
  2. Step 2: Convert to fraction form
    1,043.48/1,439.70 = 623.63/x
  3. Step 3: Cross multiply
    1,043.48x = 1,439.70 × 623.63
  4. Step 4: Simplify right side
    1,043.48x = 897,840.11
  5. Step 5: Solve for x
    x = 897,840.11/1,043.48
  6. Step 6: Final answer
    x = 860.43

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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.