Home / 859,570.40-1,289,355.60-670,613.60

Finding the Fourth Proportional to 859,570.40, 1,289,355.60 and 670,613.60

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Solution

The fourth proportional to 859,570.40, 1,289,355.60 and 670,613.60 is: 1,005,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,570.40 : 1,289,355.60 = 670,613.60 : x
  2. Step 2: Convert to fraction form
    859,570.40/1,289,355.60 = 670,613.60/x
  3. Step 3: Cross multiply
    859,570.40x = 1,289,355.60 × 670,613.60
  4. Step 4: Simplify right side
    859,570.40x = 864,659,400,596.16
  5. Step 5: Solve for x
    x = 864,659,400,596.16/859,570.40
  6. Step 6: Final answer
    x = 1,005,920.40

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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.