Home / 678,494.80-1,017,742.20-479,429.20

Finding the Fourth Proportional to 678,494.80, 1,017,742.20 and 479,429.20

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Solution

The fourth proportional to 678,494.80, 1,017,742.20 and 479,429.20 is: 719,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,494.80 : 1,017,742.20 = 479,429.20 : x
  2. Step 2: Convert to fraction form
    678,494.80/1,017,742.20 = 479,429.20/x
  3. Step 3: Cross multiply
    678,494.80x = 1,017,742.20 × 479,429.20
  4. Step 4: Simplify right side
    678,494.80x = 487,935,328,752.24
  5. Step 5: Solve for x
    x = 487,935,328,752.24/678,494.80
  6. Step 6: Final answer
    x = 719,143.80

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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.