Home / 1,355,249.45-1,870,302.89-811,279.98

Finding the Fourth Proportional to 1,355,249.45, 1,870,302.89 and 811,279.98

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Solution

The fourth proportional to 1,355,249.45, 1,870,302.89 and 811,279.98 is: 1,119,601.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,249.45 : 1,870,302.89 = 811,279.98 : x
  2. Step 2: Convert to fraction form
    1,355,249.45/1,870,302.89 = 811,279.98/x
  3. Step 3: Cross multiply
    1,355,249.45x = 1,870,302.89 × 811,279.98
  4. Step 4: Simplify right side
    1,355,249.45x = 1,517,339,291,193.14
  5. Step 5: Solve for x
    x = 1,517,339,291,193.14/1,355,249.45
  6. Step 6: Final answer
    x = 1,119,601.48

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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.