Home / 989,986.35-1,485,005.13-316,067.07

Finding the Fourth Proportional to 989,986.35, 1,485,005.13 and 316,067.07

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Solution

The fourth proportional to 989,986.35, 1,485,005.13 and 316,067.07 is: 474,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,986.35 : 1,485,005.13 = 316,067.07 : x
  2. Step 2: Convert to fraction form
    989,986.35/1,485,005.13 = 316,067.07/x
  3. Step 3: Cross multiply
    989,986.35x = 1,485,005.13 × 316,067.07
  4. Step 4: Simplify right side
    989,986.35x = 469,361,220,374.07
  5. Step 5: Solve for x
    x = 469,361,220,374.07/989,986.35
  6. Step 6: Final answer
    x = 474,108.78

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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.