Home / 919,987.07-1,380,202.94-288,900.88

Finding the Fourth Proportional to 919,987.07, 1,380,202.94 and 288,900.88

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Solution

The fourth proportional to 919,987.07, 1,380,202.94 and 288,900.88 is: 433,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,987.07 : 1,380,202.94 = 288,900.88 : x
  2. Step 2: Convert to fraction form
    919,987.07/1,380,202.94 = 288,900.88/x
  3. Step 3: Cross multiply
    919,987.07x = 1,380,202.94 × 288,900.88
  4. Step 4: Simplify right side
    919,987.07x = 398,741,841,216.33
  5. Step 5: Solve for x
    x = 398,741,841,216.33/919,987.07
  6. Step 6: Final answer
    x = 433,421.14

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1.5x scale

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.