Home / 1,886,820.20-2,830,230.30-1,289,623.40

Finding the Fourth Proportional to 1,886,820.20, 2,830,230.30 and 1,289,623.40

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Solution

The fourth proportional to 1,886,820.20, 2,830,230.30 and 1,289,623.40 is: 1,934,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886,820.20 : 2,830,230.30 = 1,289,623.40 : x
  2. Step 2: Convert to fraction form
    1,886,820.20/2,830,230.30 = 1,289,623.40/x
  3. Step 3: Cross multiply
    1,886,820.20x = 2,830,230.30 × 1,289,623.40
  4. Step 4: Simplify right side
    1,886,820.20x = 3,649,931,222,269.02
  5. Step 5: Solve for x
    x = 3,649,931,222,269.02/1,886,820.20
  6. Step 6: Final answer
    x = 1,934,435.10

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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.