Home / 1,019,000.40-1,528,500.60-419,762.40

Finding the Fourth Proportional to 1,019,000.40, 1,528,500.60 and 419,762.40

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Solution

The fourth proportional to 1,019,000.40, 1,528,500.60 and 419,762.40 is: 629,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,000.40 : 1,528,500.60 = 419,762.40 : x
  2. Step 2: Convert to fraction form
    1,019,000.40/1,528,500.60 = 419,762.40/x
  3. Step 3: Cross multiply
    1,019,000.40x = 1,528,500.60 × 419,762.40
  4. Step 4: Simplify right side
    1,019,000.40x = 641,607,080,257.44
  5. Step 5: Solve for x
    x = 641,607,080,257.44/1,019,000.40
  6. Step 6: Final answer
    x = 629,643.60

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Double scale
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Similar ratio
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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.