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Finding the Fourth Proportional to 630,404,368.80, 944,810,290.80 and 306,590,992.80

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Solution

The fourth proportional to 630,404,368.80, 944,810,290.80 and 306,590,992.80 is: 459,499,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,404,368.80 : 944,810,290.80 = 306,590,992.80 : x
  2. Step 2: Convert to fraction form
    630,404,368.80/944,810,290.80 = 306,590,992.80/x
  3. Step 3: Cross multiply
    630,404,368.80x = 944,810,290.80 × 306,590,992.80
  4. Step 4: Simplify right side
    630,404,368.80x = 289,670,325,064,028,672
  5. Step 5: Solve for x
    x = 289,670,325,064,028,672/630,404,368.80
  6. Step 6: Final answer
    x = 459,499,234.78

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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.