Home / 810,918.81-1,119,022.76-448,321.50

Finding the Fourth Proportional to 810,918.81, 1,119,022.76 and 448,321.50

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Solution

The fourth proportional to 810,918.81, 1,119,022.76 and 448,321.50 is: 618,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,918.81 : 1,119,022.76 = 448,321.50 : x
  2. Step 2: Convert to fraction form
    810,918.81/1,119,022.76 = 448,321.50/x
  3. Step 3: Cross multiply
    810,918.81x = 1,119,022.76 × 448,321.50
  4. Step 4: Simplify right side
    810,918.81x = 501,681,963,418.14
  5. Step 5: Solve for x
    x = 501,681,963,418.14/810,918.81
  6. Step 6: Final answer
    x = 618,658.68

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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.