Home / 1,330,406.80-1,993,421.40-768,461.20

Finding the Fourth Proportional to 1,330,406.80, 1,993,421.40 and 768,461.20

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Solution

The fourth proportional to 1,330,406.80, 1,993,421.40 and 768,461.20 is: 1,151,427.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,406.80 : 1,993,421.40 = 768,461.20 : x
  2. Step 2: Convert to fraction form
    1,330,406.80/1,993,421.40 = 768,461.20/x
  3. Step 3: Cross multiply
    1,330,406.80x = 1,993,421.40 × 768,461.20
  4. Step 4: Simplify right side
    1,330,406.80x = 1,531,867,001,149.68
  5. Step 5: Solve for x
    x = 1,531,867,001,149.68/1,330,406.80
  6. Step 6: Final answer
    x = 1,151,427.52

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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.