Home / 1,043.50-1,440.32-623.71

Finding the Fourth Proportional to 1,043.50, 1,440.32 and 623.71

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Solution

The fourth proportional to 1,043.50, 1,440.32 and 623.71 is: 860.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.50 : 1,440.32 = 623.71 : x
  2. Step 2: Convert to fraction form
    1,043.50/1,440.32 = 623.71/x
  3. Step 3: Cross multiply
    1,043.50x = 1,440.32 × 623.71
  4. Step 4: Simplify right side
    1,043.50x = 898,341.99
  5. Step 5: Solve for x
    x = 898,341.99/1,043.50
  6. Step 6: Final answer
    x = 860.89

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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.