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Finding the Fourth Proportional to 403,318,409.80, 604,977,614.70 and 399,492,034.60

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Solution

The fourth proportional to 403,318,409.80, 604,977,614.70 and 399,492,034.60 is: 599,238,051.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,318,409.80 : 604,977,614.70 = 399,492,034.60 : x
  2. Step 2: Convert to fraction form
    403,318,409.80/604,977,614.70 = 399,492,034.60/x
  3. Step 3: Cross multiply
    403,318,409.80x = 604,977,614.70 × 399,492,034.60
  4. Step 4: Simplify right side
    403,318,409.80x = 241,683,738,183,957,888
  5. Step 5: Solve for x
    x = 241,683,738,183,957,888/403,318,409.80
  6. Step 6: Final answer
    x = 599,238,051.90

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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.