Home / 1,289,984.64-1,780,133.40-709,203.54

Finding the Fourth Proportional to 1,289,984.64, 1,780,133.40 and 709,203.54

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Solution

The fourth proportional to 1,289,984.64, 1,780,133.40 and 709,203.54 is: 978,675.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,984.64 : 1,780,133.40 = 709,203.54 : x
  2. Step 2: Convert to fraction form
    1,289,984.64/1,780,133.40 = 709,203.54/x
  3. Step 3: Cross multiply
    1,289,984.64x = 1,780,133.40 × 709,203.54
  4. Step 4: Simplify right side
    1,289,984.64x = 1,262,476,908,952.24
  5. Step 5: Solve for x
    x = 1,262,476,908,952.24/1,289,984.64
  6. Step 6: Final answer
    x = 978,675.92

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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.