Home / 859,042.80-1,289,876.40-659,588.40

Finding the Fourth Proportional to 859,042.80, 1,289,876.40 and 659,588.40

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Solution

The fourth proportional to 859,042.80, 1,289,876.40 and 659,588.40 is: 990,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,042.80 : 1,289,876.40 = 659,588.40 : x
  2. Step 2: Convert to fraction form
    859,042.80/1,289,876.40 = 659,588.40/x
  3. Step 3: Cross multiply
    859,042.80x = 1,289,876.40 × 659,588.40
  4. Step 4: Simplify right side
    859,042.80x = 850,787,510,873.76
  5. Step 5: Solve for x
    x = 850,787,510,873.76/859,042.80
  6. Step 6: Final answer
    x = 990,390.13

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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.