Home / 818,118.12-1,129,000.17-455,546.34

Finding the Fourth Proportional to 818,118.12, 1,129,000.17 and 455,546.34

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Solution

The fourth proportional to 818,118.12, 1,129,000.17 and 455,546.34 is: 628,652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,118.12 : 1,129,000.17 = 455,546.34 : x
  2. Step 2: Convert to fraction form
    818,118.12/1,129,000.17 = 455,546.34/x
  3. Step 3: Cross multiply
    818,118.12x = 1,129,000.17 × 455,546.34
  4. Step 4: Simplify right side
    818,118.12x = 514,311,895,302.88
  5. Step 5: Solve for x
    x = 514,311,895,302.88/818,118.12
  6. Step 6: Final answer
    x = 628,652.37

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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.