Home / 1,120,004.21-1,680,012.39-278,555.96

Finding the Fourth Proportional to 1,120,004.21, 1,680,012.39 and 278,555.96

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Solution

The fourth proportional to 1,120,004.21, 1,680,012.39 and 278,555.96 is: 417,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,004.21 : 1,680,012.39 = 278,555.96 : x
  2. Step 2: Convert to fraction form
    1,120,004.21/1,680,012.39 = 278,555.96/x
  3. Step 3: Cross multiply
    1,120,004.21x = 1,680,012.39 × 278,555.96
  4. Step 4: Simplify right side
    1,120,004.21x = 467,977,464,108.34
  5. Step 5: Solve for x
    x = 467,977,464,108.34/1,120,004.21
  6. Step 6: Final answer
    x = 417,835.45

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1.5x scale

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.