Home / 818,537.20-1,227,506.43-312,848.12

Finding the Fourth Proportional to 818,537.20, 1,227,506.43 and 312,848.12

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Solution

The fourth proportional to 818,537.20, 1,227,506.43 and 312,848.12 is: 469,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,537.20 : 1,227,506.43 = 312,848.12 : x
  2. Step 2: Convert to fraction form
    818,537.20/1,227,506.43 = 312,848.12/x
  3. Step 3: Cross multiply
    818,537.20x = 1,227,506.43 × 312,848.12
  4. Step 4: Simplify right side
    818,537.20x = 384,023,083,155.36
  5. Step 5: Solve for x
    x = 384,023,083,155.36/818,537.20
  6. Step 6: Final answer
    x = 469,157.77

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1.5x scale

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.