Home / 1,383,875.88-1,909,749.54-772,028.64

Finding the Fourth Proportional to 1,383,875.88, 1,909,749.54 and 772,028.64

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Solution

The fourth proportional to 1,383,875.88, 1,909,749.54 and 772,028.64 is: 1,065,399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,875.88 : 1,909,749.54 = 772,028.64 : x
  2. Step 2: Convert to fraction form
    1,383,875.88/1,909,749.54 = 772,028.64/x
  3. Step 3: Cross multiply
    1,383,875.88x = 1,909,749.54 × 772,028.64
  4. Step 4: Simplify right side
    1,383,875.88x = 1,474,381,341,528.98
  5. Step 5: Solve for x
    x = 1,474,381,341,528.98/1,383,875.88
  6. Step 6: Final answer
    x = 1,065,399.98

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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.