Home / 1,991,900.32-2,748,798.40-1,086,462.88

Finding the Fourth Proportional to 1,991,900.32, 2,748,798.40 and 1,086,462.88

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Solution

The fourth proportional to 1,991,900.32, 2,748,798.40 and 1,086,462.88 is: 1,499,305.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,900.32 : 2,748,798.40 = 1,086,462.88 : x
  2. Step 2: Convert to fraction form
    1,991,900.32/2,748,798.40 = 1,086,462.88/x
  3. Step 3: Cross multiply
    1,991,900.32x = 2,748,798.40 × 1,086,462.88
  4. Step 4: Simplify right side
    1,991,900.32x = 2,986,467,426,203.39
  5. Step 5: Solve for x
    x = 2,986,467,426,203.39/1,991,900.32
  6. Step 6: Final answer
    x = 1,499,305.66

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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.