Home / 1,208,421.67-1,667,583.73-664,555.78

Finding the Fourth Proportional to 1,208,421.67, 1,667,583.73 and 664,555.78

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Solution

The fourth proportional to 1,208,421.67, 1,667,583.73 and 664,555.78 is: 917,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,421.67 : 1,667,583.73 = 664,555.78 : x
  2. Step 2: Convert to fraction form
    1,208,421.67/1,667,583.73 = 664,555.78/x
  3. Step 3: Cross multiply
    1,208,421.67x = 1,667,583.73 × 664,555.78
  4. Step 4: Simplify right side
    1,208,421.67x = 1,108,202,400,575.11
  5. Step 5: Solve for x
    x = 1,108,202,400,575.11/1,208,421.67
  6. Step 6: Final answer
    x = 917,065.98

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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.