Home / 1,318,700.52-1,820,161.53-775,200.51

Finding the Fourth Proportional to 1,318,700.52, 1,820,161.53 and 775,200.51

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Solution

The fourth proportional to 1,318,700.52, 1,820,161.53 and 775,200.51 is: 1,069,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,700.52 : 1,820,161.53 = 775,200.51 : x
  2. Step 2: Convert to fraction form
    1,318,700.52/1,820,161.53 = 775,200.51/x
  3. Step 3: Cross multiply
    1,318,700.52x = 1,820,161.53 × 775,200.51
  4. Step 4: Simplify right side
    1,318,700.52x = 1,410,990,146,338.38
  5. Step 5: Solve for x
    x = 1,410,990,146,338.38/1,318,700.52
  6. Step 6: Final answer
    x = 1,069,985.28

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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.