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Finding the Fourth Proportional to 405,000.60, 607,500.90 and 120,690.60

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Solution

The fourth proportional to 405,000.60, 607,500.90 and 120,690.60 is: 181,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,000.60 : 607,500.90 = 120,690.60 : x
  2. Step 2: Convert to fraction form
    405,000.60/607,500.90 = 120,690.60/x
  3. Step 3: Cross multiply
    405,000.60x = 607,500.90 × 120,690.60
  4. Step 4: Simplify right side
    405,000.60x = 73,319,648,121.54
  5. Step 5: Solve for x
    x = 73,319,648,121.54/405,000.60
  6. Step 6: Final answer
    x = 181,035.90

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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.