Home / 699,521.85-1,047,110.74-378,877.34

Finding the Fourth Proportional to 699,521.85, 1,047,110.74 and 378,877.34

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Solution

The fourth proportional to 699,521.85, 1,047,110.74 and 378,877.34 is: 567,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,521.85 : 1,047,110.74 = 378,877.34 : x
  2. Step 2: Convert to fraction form
    699,521.85/1,047,110.74 = 378,877.34/x
  3. Step 3: Cross multiply
    699,521.85x = 1,047,110.74 × 378,877.34
  4. Step 4: Simplify right side
    699,521.85x = 396,726,533,527.22
  5. Step 5: Solve for x
    x = 396,726,533,527.22/699,521.85
  6. Step 6: Final answer
    x = 567,139.59

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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.