Home / 1,122,980.39-1,549,712.94-639,590.51

Finding the Fourth Proportional to 1,122,980.39, 1,549,712.94 and 639,590.51

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Solution

The fourth proportional to 1,122,980.39, 1,549,712.94 and 639,590.51 is: 882,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,980.39 : 1,549,712.94 = 639,590.51 : x
  2. Step 2: Convert to fraction form
    1,122,980.39/1,549,712.94 = 639,590.51/x
  3. Step 3: Cross multiply
    1,122,980.39x = 1,549,712.94 × 639,590.51
  4. Step 4: Simplify right side
    1,122,980.39x = 991,181,686,450.25
  5. Step 5: Solve for x
    x = 991,181,686,450.25/1,122,980.39
  6. Step 6: Final answer
    x = 882,634.91

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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.