Home / 1,420,171.20-2,130,256.80-860,299.20

Finding the Fourth Proportional to 1,420,171.20, 2,130,256.80 and 860,299.20

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Solution

The fourth proportional to 1,420,171.20, 2,130,256.80 and 860,299.20 is: 1,290,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,171.20 : 2,130,256.80 = 860,299.20 : x
  2. Step 2: Convert to fraction form
    1,420,171.20/2,130,256.80 = 860,299.20/x
  3. Step 3: Cross multiply
    1,420,171.20x = 2,130,256.80 × 860,299.20
  4. Step 4: Simplify right side
    1,420,171.20x = 1,832,658,220,834.56
  5. Step 5: Solve for x
    x = 1,832,658,220,834.56/1,420,171.20
  6. Step 6: Final answer
    x = 1,290,448.80

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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.