Home / 1,311,780.86-1,810,057.83-738,784.70

Finding the Fourth Proportional to 1,311,780.86, 1,810,057.83 and 738,784.70

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Solution

The fourth proportional to 1,311,780.86, 1,810,057.83 and 738,784.70 is: 1,019,410.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,780.86 : 1,810,057.83 = 738,784.70 : x
  2. Step 2: Convert to fraction form
    1,311,780.86/1,810,057.83 = 738,784.70/x
  3. Step 3: Cross multiply
    1,311,780.86x = 1,810,057.83 × 738,784.70
  4. Step 4: Simplify right side
    1,311,780.86x = 1,337,243,030,919.20
  5. Step 5: Solve for x
    x = 1,337,243,030,919.20/1,311,780.86
  6. Step 6: Final answer
    x = 1,019,410.38

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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.