Home / 1,089.41-1,503.38-623.66

Finding the Fourth Proportional to 1,089.41, 1,503.38 and 623.66

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Solution

The fourth proportional to 1,089.41, 1,503.38 and 623.66 is: 860.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.41 : 1,503.38 = 623.66 : x
  2. Step 2: Convert to fraction form
    1,089.41/1,503.38 = 623.66/x
  3. Step 3: Cross multiply
    1,089.41x = 1,503.38 × 623.66
  4. Step 4: Simplify right side
    1,089.41x = 937,597.97
  5. Step 5: Solve for x
    x = 937,597.97/1,089.41
  6. Step 6: Final answer
    x = 860.65

Related Problems

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Half scale
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Double scale
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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.