Home / 990,930.38-1,367,485.29-538,221.38

Finding the Fourth Proportional to 990,930.38, 1,367,485.29 and 538,221.38

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Solution

The fourth proportional to 990,930.38, 1,367,485.29 and 538,221.38 is: 742,746.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,930.38 : 1,367,485.29 = 538,221.38 : x
  2. Step 2: Convert to fraction form
    990,930.38/1,367,485.29 = 538,221.38/x
  3. Step 3: Cross multiply
    990,930.38x = 1,367,485.29 × 538,221.38
  4. Step 4: Simplify right side
    990,930.38x = 736,009,813,076.07
  5. Step 5: Solve for x
    x = 736,009,813,076.07/990,930.38
  6. Step 6: Final answer
    x = 742,746.24

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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.