Home / 1,429,485.39-1,973,132.70-920,187.75

Finding the Fourth Proportional to 1,429,485.39, 1,973,132.70 and 920,187.75

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Solution

The fourth proportional to 1,429,485.39, 1,973,132.70 and 920,187.75 is: 1,270,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,485.39 : 1,973,132.70 = 920,187.75 : x
  2. Step 2: Convert to fraction form
    1,429,485.39/1,973,132.70 = 920,187.75/x
  3. Step 3: Cross multiply
    1,429,485.39x = 1,973,132.70 × 920,187.75
  4. Step 4: Simplify right side
    1,429,485.39x = 1,815,652,539,664.43
  5. Step 5: Solve for x
    x = 1,815,652,539,664.43/1,429,485.39
  6. Step 6: Final answer
    x = 1,270,144.17

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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.