Home / 1,439,795.81-2,160,048.94-428,913.83

Finding the Fourth Proportional to 1,439,795.81, 2,160,048.94 and 428,913.83

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Solution

The fourth proportional to 1,439,795.81, 2,160,048.94 and 428,913.83 is: 643,476.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,795.81 : 2,160,048.94 = 428,913.83 : x
  2. Step 2: Convert to fraction form
    1,439,795.81/2,160,048.94 = 428,913.83/x
  3. Step 3: Cross multiply
    1,439,795.81x = 2,160,048.94 × 428,913.83
  4. Step 4: Simplify right side
    1,439,795.81x = 926,474,868,170.68
  5. Step 5: Solve for x
    x = 926,474,868,170.68/1,439,795.81
  6. Step 6: Final answer
    x = 643,476.57

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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.