Home / 1,185,803.76-1,636,407.32-641,939.39

Finding the Fourth Proportional to 1,185,803.76, 1,636,407.32 and 641,939.39

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Solution

The fourth proportional to 1,185,803.76, 1,636,407.32 and 641,939.39 is: 885,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,803.76 : 1,636,407.32 = 641,939.39 : x
  2. Step 2: Convert to fraction form
    1,185,803.76/1,636,407.32 = 641,939.39/x
  3. Step 3: Cross multiply
    1,185,803.76x = 1,636,407.32 × 641,939.39
  4. Step 4: Simplify right side
    1,185,803.76x = 1,050,474,305,400.60
  5. Step 5: Solve for x
    x = 1,050,474,305,400.60/1,185,803.76
  6. Step 6: Final answer
    x = 885,875.34

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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.