Home / 1,294,081.20-1,939,663.80-620,485.20

Finding the Fourth Proportional to 1,294,081.20, 1,939,663.80 and 620,485.20

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Solution

The fourth proportional to 1,294,081.20, 1,939,663.80 and 620,485.20 is: 930,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,081.20 : 1,939,663.80 = 620,485.20 : x
  2. Step 2: Convert to fraction form
    1,294,081.20/1,939,663.80 = 620,485.20/x
  3. Step 3: Cross multiply
    1,294,081.20x = 1,939,663.80 × 620,485.20
  4. Step 4: Simplify right side
    1,294,081.20x = 1,203,532,680,875.76
  5. Step 5: Solve for x
    x = 1,203,532,680,875.76/1,294,081.20
  6. Step 6: Final answer
    x = 930,028.72

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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.