Home / 680,271.21-1,020,408.12-253,800.72

Finding the Fourth Proportional to 680,271.21, 1,020,408.12 and 253,800.72

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Solution

The fourth proportional to 680,271.21, 1,020,408.12 and 253,800.72 is: 380,701.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,271.21 : 1,020,408.12 = 253,800.72 : x
  2. Step 2: Convert to fraction form
    680,271.21/1,020,408.12 = 253,800.72/x
  3. Step 3: Cross multiply
    680,271.21x = 1,020,408.12 × 253,800.72
  4. Step 4: Simplify right side
    680,271.21x = 258,980,315,549.85
  5. Step 5: Solve for x
    x = 258,980,315,549.85/680,271.21
  6. Step 6: Final answer
    x = 380,701.57

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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.