Home / 1,355,295.52-1,870,366.82-811,326.43

Finding the Fourth Proportional to 1,355,295.52, 1,870,366.82 and 811,326.43

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Solution

The fourth proportional to 1,355,295.52, 1,870,366.82 and 811,326.43 is: 1,119,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,295.52 : 1,870,366.82 = 811,326.43 : x
  2. Step 2: Convert to fraction form
    1,355,295.52/1,870,366.82 = 811,326.43/x
  3. Step 3: Cross multiply
    1,355,295.52x = 1,870,366.82 × 811,326.43
  4. Step 4: Simplify right side
    1,355,295.52x = 1,517,478,029,467.13
  5. Step 5: Solve for x
    x = 1,517,478,029,467.13/1,355,295.52
  6. Step 6: Final answer
    x = 1,119,665.79

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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.