Home / 766,620.95-1,057,922.65-422,488.76

Finding the Fourth Proportional to 766,620.95, 1,057,922.65 and 422,488.76

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Solution

The fourth proportional to 766,620.95, 1,057,922.65 and 422,488.76 is: 583,026.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,620.95 : 1,057,922.65 = 422,488.76 : x
  2. Step 2: Convert to fraction form
    766,620.95/1,057,922.65 = 422,488.76/x
  3. Step 3: Cross multiply
    766,620.95x = 1,057,922.65 × 422,488.76
  4. Step 4: Simplify right side
    766,620.95x = 446,960,422,228.58
  5. Step 5: Solve for x
    x = 446,960,422,228.58/766,620.95
  6. Step 6: Final answer
    x = 583,026.63

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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.