Home / 1,242,012.60-1,863,018.90-443,320.20

Finding the Fourth Proportional to 1,242,012.60, 1,863,018.90 and 443,320.20

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Solution

The fourth proportional to 1,242,012.60, 1,863,018.90 and 443,320.20 is: 664,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,012.60 : 1,863,018.90 = 443,320.20 : x
  2. Step 2: Convert to fraction form
    1,242,012.60/1,863,018.90 = 443,320.20/x
  3. Step 3: Cross multiply
    1,242,012.60x = 1,863,018.90 × 443,320.20
  4. Step 4: Simplify right side
    1,242,012.60x = 825,913,911,351.78
  5. Step 5: Solve for x
    x = 825,913,911,351.78/1,242,012.60
  6. Step 6: Final answer
    x = 664,980.30

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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.