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Finding the Fourth Proportional to 370,499.80, 520,099.40 and 370,499.80

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Solution

The fourth proportional to 370,499.80, 520,099.40 and 370,499.80 is: 520,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,499.80 : 520,099.40 = 370,499.80 : x
  2. Step 2: Convert to fraction form
    370,499.80/520,099.40 = 370,499.80/x
  3. Step 3: Cross multiply
    370,499.80x = 520,099.40 × 370,499.80
  4. Step 4: Simplify right side
    370,499.80x = 192,696,723,680.12
  5. Step 5: Solve for x
    x = 192,696,723,680.12/370,499.80
  6. Step 6: Final answer
    x = 520,099.40

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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.