Home / 1,189,123.27-1,783,621.22-420,567.73

Finding the Fourth Proportional to 1,189,123.27, 1,783,621.22 and 420,567.73

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Solution

The fourth proportional to 1,189,123.27, 1,783,621.22 and 420,567.73 is: 630,829.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,123.27 : 1,783,621.22 = 420,567.73 : x
  2. Step 2: Convert to fraction form
    1,189,123.27/1,783,621.22 = 420,567.73/x
  3. Step 3: Cross multiply
    1,189,123.27x = 1,783,621.22 × 420,567.73
  4. Step 4: Simplify right side
    1,189,123.27x = 750,133,521,113.34
  5. Step 5: Solve for x
    x = 750,133,521,113.34/1,189,123.27
  6. Step 6: Final answer
    x = 630,829.07

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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.