Home / 1,155,409-1,594,434.58-639,149.44

Finding the Fourth Proportional to 1,155,409, 1,594,434.58 and 639,149.44

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Solution

The fourth proportional to 1,155,409, 1,594,434.58 and 639,149.44 is: 882,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,409 : 1,594,434.58 = 639,149.44 : x
  2. Step 2: Convert to fraction form
    1,155,409/1,594,434.58 = 639,149.44/x
  3. Step 3: Cross multiply
    1,155,409x = 1,594,434.58 × 639,149.44
  4. Step 4: Simplify right side
    1,155,409x = 1,019,081,968,923.64
  5. Step 5: Solve for x
    x = 1,019,081,968,923.64/1,155,409
  6. Step 6: Final answer
    x = 882,009.72

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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.