Home / 842,638.55-1,264,145.12-393,114.20

Finding the Fourth Proportional to 842,638.55, 1,264,145.12 and 393,114.20

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Solution

The fourth proportional to 842,638.55, 1,264,145.12 and 393,114.20 is: 589,758.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,638.55 : 1,264,145.12 = 393,114.20 : x
  2. Step 2: Convert to fraction form
    842,638.55/1,264,145.12 = 393,114.20/x
  3. Step 3: Cross multiply
    842,638.55x = 1,264,145.12 × 393,114.20
  4. Step 4: Simplify right side
    842,638.55x = 496,953,390,720.59
  5. Step 5: Solve for x
    x = 496,953,390,720.59/842,638.55
  6. Step 6: Final answer
    x = 589,758.67

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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.