Home / 1,290,947.80-1,936,421.70-934,288.60

Finding the Fourth Proportional to 1,290,947.80, 1,936,421.70 and 934,288.60

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Solution

The fourth proportional to 1,290,947.80, 1,936,421.70 and 934,288.60 is: 1,401,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,947.80 : 1,936,421.70 = 934,288.60 : x
  2. Step 2: Convert to fraction form
    1,290,947.80/1,936,421.70 = 934,288.60/x
  3. Step 3: Cross multiply
    1,290,947.80x = 1,936,421.70 × 934,288.60
  4. Step 4: Simplify right side
    1,290,947.80x = 1,809,176,719,102.62
  5. Step 5: Solve for x
    x = 1,809,176,719,102.62/1,290,947.80
  6. Step 6: Final answer
    x = 1,401,432.90

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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.