Home / 661,533.10-991,427.73-261,955.89

Finding the Fourth Proportional to 661,533.10, 991,427.73 and 261,955.89

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Solution

The fourth proportional to 661,533.10, 991,427.73 and 261,955.89 is: 392,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,533.10 : 991,427.73 = 261,955.89 : x
  2. Step 2: Convert to fraction form
    661,533.10/991,427.73 = 261,955.89/x
  3. Step 3: Cross multiply
    661,533.10x = 991,427.73 × 261,955.89
  4. Step 4: Simplify right side
    661,533.10x = 259,710,333,382.83
  5. Step 5: Solve for x
    x = 259,710,333,382.83/661,533.10
  6. Step 6: Final answer
    x = 392,588.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.