Home / 1,245,743.46-1,718,633.88-786,686.76

Finding the Fourth Proportional to 1,245,743.46, 1,718,633.88 and 786,686.76

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Solution

The fourth proportional to 1,245,743.46, 1,718,633.88 and 786,686.76 is: 1,085,316.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,743.46 : 1,718,633.88 = 786,686.76 : x
  2. Step 2: Convert to fraction form
    1,245,743.46/1,718,633.88 = 786,686.76/x
  3. Step 3: Cross multiply
    1,245,743.46x = 1,718,633.88 × 786,686.76
  4. Step 4: Simplify right side
    1,245,743.46x = 1,352,026,518,683.43
  5. Step 5: Solve for x
    x = 1,352,026,518,683.43/1,245,743.46
  6. Step 6: Final answer
    x = 1,085,316.97

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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.