Home / 678,826.10-1,017,364.35-520,268.60

Finding the Fourth Proportional to 678,826.10, 1,017,364.35 and 520,268.60

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Solution

The fourth proportional to 678,826.10, 1,017,364.35 and 520,268.60 is: 779,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,826.10 : 1,017,364.35 = 520,268.60 : x
  2. Step 2: Convert to fraction form
    678,826.10/1,017,364.35 = 520,268.60/x
  3. Step 3: Cross multiply
    678,826.10x = 1,017,364.35 × 520,268.60
  4. Step 4: Simplify right side
    678,826.10x = 529,302,726,064.41
  5. Step 5: Solve for x
    x = 529,302,726,064.41/678,826.10
  6. Step 6: Final answer
    x = 779,732.43

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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.