Home / 761,610.11-1,051,137.72-486,086.90

Finding the Fourth Proportional to 761,610.11, 1,051,137.72 and 486,086.90

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Solution

The fourth proportional to 761,610.11, 1,051,137.72 and 486,086.90 is: 670,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,610.11 : 1,051,137.72 = 486,086.90 : x
  2. Step 2: Convert to fraction form
    761,610.11/1,051,137.72 = 486,086.90/x
  3. Step 3: Cross multiply
    761,610.11x = 1,051,137.72 × 486,086.90
  4. Step 4: Simplify right side
    761,610.11x = 510,944,275,787.87
  5. Step 5: Solve for x
    x = 510,944,275,787.87/761,610.11
  6. Step 6: Final answer
    x = 670,873.81

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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.