Home / 1,619,223.80-2,430,390.90-821,406.20

Finding the Fourth Proportional to 1,619,223.80, 2,430,390.90 and 821,406.20

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Solution

The fourth proportional to 1,619,223.80, 2,430,390.90 and 821,406.20 is: 1,232,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,223.80 : 2,430,390.90 = 821,406.20 : x
  2. Step 2: Convert to fraction form
    1,619,223.80/2,430,390.90 = 821,406.20/x
  3. Step 3: Cross multiply
    1,619,223.80x = 2,430,390.90 × 821,406.20
  4. Step 4: Simplify right side
    1,619,223.80x = 1,996,338,153,683.58
  5. Step 5: Solve for x
    x = 1,996,338,153,683.58/1,619,223.80
  6. Step 6: Final answer
    x = 1,232,898.23

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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.