Home / 619,849.40-928,218.90-408,342.20

Finding the Fourth Proportional to 619,849.40, 928,218.90 and 408,342.20

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Solution

The fourth proportional to 619,849.40, 928,218.90 and 408,342.20 is: 611,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,849.40 : 928,218.90 = 408,342.20 : x
  2. Step 2: Convert to fraction form
    619,849.40/928,218.90 = 408,342.20/x
  3. Step 3: Cross multiply
    619,849.40x = 928,218.90 × 408,342.20
  4. Step 4: Simplify right side
    619,849.40x = 379,030,947,707.58
  5. Step 5: Solve for x
    x = 379,030,947,707.58/619,849.40
  6. Step 6: Final answer
    x = 611,488.77

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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.