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Finding the Fourth Proportional to 399,411,430.40, 599,117,145.60 and 330,136,601.60

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Solution

The fourth proportional to 399,411,430.40, 599,117,145.60 and 330,136,601.60 is: 495,204,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,411,430.40 : 599,117,145.60 = 330,136,601.60 : x
  2. Step 2: Convert to fraction form
    399,411,430.40/599,117,145.60 = 330,136,601.60/x
  3. Step 3: Cross multiply
    399,411,430.40x = 599,117,145.60 × 330,136,601.60
  4. Step 4: Simplify right side
    399,411,430.40x = 197,790,498,408,676,416
  5. Step 5: Solve for x
    x = 197,790,498,408,676,416/399,411,430.40
  6. Step 6: Final answer
    x = 495,204,902.40

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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.