Home / 1,221,740.88-1,686,094.86-677,979.54

Finding the Fourth Proportional to 1,221,740.88, 1,686,094.86 and 677,979.54

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Solution

The fourth proportional to 1,221,740.88, 1,686,094.86 and 677,979.54 is: 935,663.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,740.88 : 1,686,094.86 = 677,979.54 : x
  2. Step 2: Convert to fraction form
    1,221,740.88/1,686,094.86 = 677,979.54/x
  3. Step 3: Cross multiply
    1,221,740.88x = 1,686,094.86 × 677,979.54
  4. Step 4: Simplify right side
    1,221,740.88x = 1,143,137,817,579.16
  5. Step 5: Solve for x
    x = 1,143,137,817,579.16/1,221,740.88
  6. Step 6: Final answer
    x = 935,663.07

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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.