Home / 1,515,478.74-2,091,356.38-836,410.38

Finding the Fourth Proportional to 1,515,478.74, 2,091,356.38 and 836,410.38

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Solution

The fourth proportional to 1,515,478.74, 2,091,356.38 and 836,410.38 is: 1,154,243.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,478.74 : 2,091,356.38 = 836,410.38 : x
  2. Step 2: Convert to fraction form
    1,515,478.74/2,091,356.38 = 836,410.38/x
  3. Step 3: Cross multiply
    1,515,478.74x = 2,091,356.38 × 836,410.38
  4. Step 4: Simplify right side
    1,515,478.74x = 1,749,232,184,511.22
  5. Step 5: Solve for x
    x = 1,749,232,184,511.22/1,515,478.74
  6. Step 6: Final answer
    x = 1,154,243.96

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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.