Home / 859,057.80-1,289,898.90-659,603.40

Finding the Fourth Proportional to 859,057.80, 1,289,898.90 and 659,603.40

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Solution

The fourth proportional to 859,057.80, 1,289,898.90 and 659,603.40 is: 990,412.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,057.80 : 1,289,898.90 = 659,603.40 : x
  2. Step 2: Convert to fraction form
    859,057.80/1,289,898.90 = 659,603.40/x
  3. Step 3: Cross multiply
    859,057.80x = 1,289,898.90 × 659,603.40
  4. Step 4: Simplify right side
    859,057.80x = 850,821,700,096.26
  5. Step 5: Solve for x
    x = 850,821,700,096.26/859,057.80
  6. Step 6: Final answer
    x = 990,412.64

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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.