Home / 1,021,076.10-1,409,061.69-639,313.38

Finding the Fourth Proportional to 1,021,076.10, 1,409,061.69 and 639,313.38

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Solution

The fourth proportional to 1,021,076.10, 1,409,061.69 and 639,313.38 is: 882,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,076.10 : 1,409,061.69 = 639,313.38 : x
  2. Step 2: Convert to fraction form
    1,021,076.10/1,409,061.69 = 639,313.38/x
  3. Step 3: Cross multiply
    1,021,076.10x = 1,409,061.69 × 639,313.38
  4. Step 4: Simplify right side
    1,021,076.10x = 900,831,991,662.41
  5. Step 5: Solve for x
    x = 900,831,991,662.41/1,021,076.10
  6. Step 6: Final answer
    x = 882,237.86

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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.