Home / 1,099,406.70-1,648,672.65-389,069.10

Finding the Fourth Proportional to 1,099,406.70, 1,648,672.65 and 389,069.10

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Solution

The fourth proportional to 1,099,406.70, 1,648,672.65 and 389,069.10 is: 583,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,406.70 : 1,648,672.65 = 389,069.10 : x
  2. Step 2: Convert to fraction form
    1,099,406.70/1,648,672.65 = 389,069.10/x
  3. Step 3: Cross multiply
    1,099,406.70x = 1,648,672.65 × 389,069.10
  4. Step 4: Simplify right side
    1,099,406.70x = 641,447,584,130.12
  5. Step 5: Solve for x
    x = 641,447,584,130.12/1,099,406.70
  6. Step 6: Final answer
    x = 583,448.86

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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.