Home / 1,188,942.13-1,783,038.56-390,037.51

Finding the Fourth Proportional to 1,188,942.13, 1,783,038.56 and 390,037.51

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Solution

The fourth proportional to 1,188,942.13, 1,783,038.56 and 390,037.51 is: 584,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,942.13 : 1,783,038.56 = 390,037.51 : x
  2. Step 2: Convert to fraction form
    1,188,942.13/1,783,038.56 = 390,037.51/x
  3. Step 3: Cross multiply
    1,188,942.13x = 1,783,038.56 × 390,037.51
  4. Step 4: Simplify right side
    1,188,942.13x = 695,451,909,311.01
  5. Step 5: Solve for x
    x = 695,451,909,311.01/1,188,942.13
  6. Step 6: Final answer
    x = 584,933.36

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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.