Home / 1,326,597.60-1,990,179.72-428,090.40

Finding the Fourth Proportional to 1,326,597.60, 1,990,179.72 and 428,090.40

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Solution

The fourth proportional to 1,326,597.60, 1,990,179.72 and 428,090.40 is: 642,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,597.60 : 1,990,179.72 = 428,090.40 : x
  2. Step 2: Convert to fraction form
    1,326,597.60/1,990,179.72 = 428,090.40/x
  3. Step 3: Cross multiply
    1,326,597.60x = 1,990,179.72 × 428,090.40
  4. Step 4: Simplify right side
    1,326,597.60x = 851,976,832,406.69
  5. Step 5: Solve for x
    x = 851,976,832,406.69/1,326,597.60
  6. Step 6: Final answer
    x = 642,227.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.