Home / 1,281,146.40-1,921,940.64-523,399.68

Finding the Fourth Proportional to 1,281,146.40, 1,921,940.64 and 523,399.68

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Solution

The fourth proportional to 1,281,146.40, 1,921,940.64 and 523,399.68 is: 785,189.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,146.40 : 1,921,940.64 = 523,399.68 : x
  2. Step 2: Convert to fraction form
    1,281,146.40/1,921,940.64 = 523,399.68/x
  3. Step 3: Cross multiply
    1,281,146.40x = 1,921,940.64 × 523,399.68
  4. Step 4: Simplify right side
    1,281,146.40x = 1,005,943,115,955.00
  5. Step 5: Solve for x
    x = 1,005,943,115,955.00/1,281,146.40
  6. Step 6: Final answer
    x = 785,189.82

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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.