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Finding the Fourth Proportional to 370,856.80, 520,380.50 and 370,856.80

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Solution

The fourth proportional to 370,856.80, 520,380.50 and 370,856.80 is: 520,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,856.80 : 520,380.50 = 370,856.80 : x
  2. Step 2: Convert to fraction form
    370,856.80/520,380.50 = 370,856.80/x
  3. Step 3: Cross multiply
    370,856.80x = 520,380.50 × 370,856.80
  4. Step 4: Simplify right side
    370,856.80x = 192,986,647,012.40
  5. Step 5: Solve for x
    x = 192,986,647,012.40/370,856.80
  6. Step 6: Final answer
    x = 520,380.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.