Home / 1,258,893.20-1,888,897.89-659,711.90

Finding the Fourth Proportional to 1,258,893.20, 1,888,897.89 and 659,711.90

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Solution

The fourth proportional to 1,258,893.20, 1,888,897.89 and 659,711.90 is: 989,860.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,893.20 : 1,888,897.89 = 659,711.90 : x
  2. Step 2: Convert to fraction form
    1,258,893.20/1,888,897.89 = 659,711.90/x
  3. Step 3: Cross multiply
    1,258,893.20x = 1,888,897.89 × 659,711.90
  4. Step 4: Simplify right side
    1,258,893.20x = 1,246,128,415,917.89
  5. Step 5: Solve for x
    x = 1,246,128,415,917.89/1,258,893.20
  6. Step 6: Final answer
    x = 989,860.31

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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.