Home / 1,330,900.40-1,996,350.60-621,000.20

Finding the Fourth Proportional to 1,330,900.40, 1,996,350.60 and 621,000.20

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Solution

The fourth proportional to 1,330,900.40, 1,996,350.60 and 621,000.20 is: 931,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,900.40 : 1,996,350.60 = 621,000.20 : x
  2. Step 2: Convert to fraction form
    1,330,900.40/1,996,350.60 = 621,000.20/x
  3. Step 3: Cross multiply
    1,330,900.40x = 1,996,350.60 × 621,000.20
  4. Step 4: Simplify right side
    1,330,900.40x = 1,239,734,121,870.12
  5. Step 5: Solve for x
    x = 1,239,734,121,870.12/1,330,900.40
  6. Step 6: Final answer
    x = 931,500.30

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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.