Home / 767,678.12-1,059,447.72-445,388.36

Finding the Fourth Proportional to 767,678.12, 1,059,447.72 and 445,388.36

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Solution

The fourth proportional to 767,678.12, 1,059,447.72 and 445,388.36 is: 614,666.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,678.12 : 1,059,447.72 = 445,388.36 : x
  2. Step 2: Convert to fraction form
    767,678.12/1,059,447.72 = 445,388.36/x
  3. Step 3: Cross multiply
    767,678.12x = 1,059,447.72 × 445,388.36
  4. Step 4: Simplify right side
    767,678.12x = 471,865,682,516.54
  5. Step 5: Solve for x
    x = 471,865,682,516.54/767,678.12
  6. Step 6: Final answer
    x = 614,666.06

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1.5x scale

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.