Home / 677,978.58-1,016,966.85-278,337.84

Finding the Fourth Proportional to 677,978.58, 1,016,966.85 and 278,337.84

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Solution

The fourth proportional to 677,978.58, 1,016,966.85 and 278,337.84 is: 417,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,978.58 : 1,016,966.85 = 278,337.84 : x
  2. Step 2: Convert to fraction form
    677,978.58/1,016,966.85 = 278,337.84/x
  3. Step 3: Cross multiply
    677,978.58x = 1,016,966.85 × 278,337.84
  4. Step 4: Simplify right side
    677,978.58x = 283,060,356,380.60
  5. Step 5: Solve for x
    x = 283,060,356,380.60/677,978.58
  6. Step 6: Final answer
    x = 417,506.34

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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.