Home / 420,291,146.60-630,436,719.90-259,048,010.60

Finding the Fourth Proportional to 420,291,146.60, 630,436,719.90 and 259,048,010.60

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Solution

The fourth proportional to 420,291,146.60, 630,436,719.90 and 259,048,010.60 is: 388,572,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,291,146.60 : 630,436,719.90 = 259,048,010.60 : x
  2. Step 2: Convert to fraction form
    420,291,146.60/630,436,719.90 = 259,048,010.60/x
  3. Step 3: Cross multiply
    420,291,146.60x = 630,436,719.90 × 259,048,010.60
  4. Step 4: Simplify right side
    420,291,146.60x = 163,313,378,099,284,416
  5. Step 5: Solve for x
    x = 163,313,378,099,284,416/420,291,146.60
  6. Step 6: Final answer
    x = 388,572,015.90

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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.