Home / 863,870.40-1,295,805.60-414,514.80

Finding the Fourth Proportional to 863,870.40, 1,295,805.60 and 414,514.80

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Solution

The fourth proportional to 863,870.40, 1,295,805.60 and 414,514.80 is: 621,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,870.40 : 1,295,805.60 = 414,514.80 : x
  2. Step 2: Convert to fraction form
    863,870.40/1,295,805.60 = 414,514.80/x
  3. Step 3: Cross multiply
    863,870.40x = 1,295,805.60 × 414,514.80
  4. Step 4: Simplify right side
    863,870.40x = 537,130,599,122.88
  5. Step 5: Solve for x
    x = 537,130,599,122.88/863,870.40
  6. Step 6: Final answer
    x = 621,772.20

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1.5x scale

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.