Home / 1,122,629.40-1,549,017.54-639,165.24

Finding the Fourth Proportional to 1,122,629.40, 1,549,017.54 and 639,165.24

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Solution

The fourth proportional to 1,122,629.40, 1,549,017.54 and 639,165.24 is: 881,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,629.40 : 1,549,017.54 = 639,165.24 : x
  2. Step 2: Convert to fraction form
    1,122,629.40/1,549,017.54 = 639,165.24/x
  3. Step 3: Cross multiply
    1,122,629.40x = 1,549,017.54 × 639,165.24
  4. Step 4: Simplify right side
    1,122,629.40x = 990,078,167,718.31
  5. Step 5: Solve for x
    x = 990,078,167,718.31/1,122,629.40
  6. Step 6: Final answer
    x = 881,927.88

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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.