Home / 1,097,109.80-1,642,457.10-782,181.80

Finding the Fourth Proportional to 1,097,109.80, 1,642,457.10 and 782,181.80

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Solution

The fourth proportional to 1,097,109.80, 1,642,457.10 and 782,181.80 is: 1,170,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,109.80 : 1,642,457.10 = 782,181.80 : x
  2. Step 2: Convert to fraction form
    1,097,109.80/1,642,457.10 = 782,181.80/x
  3. Step 3: Cross multiply
    1,097,109.80x = 1,642,457.10 × 782,181.80
  4. Step 4: Simplify right side
    1,097,109.80x = 1,284,700,050,900.78
  5. Step 5: Solve for x
    x = 1,284,700,050,900.78/1,097,109.80
  6. Step 6: Final answer
    x = 1,170,985.85

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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.