Home / 1,312,407.45-1,811,357.15-768,511.49

Finding the Fourth Proportional to 1,312,407.45, 1,811,357.15 and 768,511.49

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Solution

The fourth proportional to 1,312,407.45, 1,811,357.15 and 768,511.49 is: 1,060,683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,407.45 : 1,811,357.15 = 768,511.49 : x
  2. Step 2: Convert to fraction form
    1,312,407.45/1,811,357.15 = 768,511.49/x
  3. Step 3: Cross multiply
    1,312,407.45x = 1,811,357.15 × 768,511.49
  4. Step 4: Simplify right side
    1,312,407.45x = 1,392,048,769,369.31
  5. Step 5: Solve for x
    x = 1,392,048,769,369.31/1,312,407.45
  6. Step 6: Final answer
    x = 1,060,683.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.