Home / 890,962.40-1,336,749.60-259,968.80

Finding the Fourth Proportional to 890,962.40, 1,336,749.60 and 259,968.80

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Solution

The fourth proportional to 890,962.40, 1,336,749.60 and 259,968.80 is: 390,042.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,962.40 : 1,336,749.60 = 259,968.80 : x
  2. Step 2: Convert to fraction form
    890,962.40/1,336,749.60 = 259,968.80/x
  3. Step 3: Cross multiply
    890,962.40x = 1,336,749.60 × 259,968.80
  4. Step 4: Simplify right side
    890,962.40x = 347,513,189,412.48
  5. Step 5: Solve for x
    x = 347,513,189,412.48/890,962.40
  6. Step 6: Final answer
    x = 390,042.49

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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.