Home / 1,210,709.31-1,816,320.12-401,047.89

Finding the Fourth Proportional to 1,210,709.31, 1,816,320.12 and 401,047.89

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Solution

The fourth proportional to 1,210,709.31, 1,816,320.12 and 401,047.89 is: 601,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,709.31 : 1,816,320.12 = 401,047.89 : x
  2. Step 2: Convert to fraction form
    1,210,709.31/1,816,320.12 = 401,047.89/x
  3. Step 3: Cross multiply
    1,210,709.31x = 1,816,320.12 × 401,047.89
  4. Step 4: Simplify right side
    1,210,709.31x = 728,431,351,690.55
  5. Step 5: Solve for x
    x = 728,431,351,690.55/1,210,709.31
  6. Step 6: Final answer
    x = 601,656.69

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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.