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Finding the Fourth Proportional to 768,365,466.89, 1,152,375,703.38 and 353,443,791.87

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Solution

The fourth proportional to 768,365,466.89, 1,152,375,703.38 and 353,443,791.87 is: 530,086,340.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,365,466.89 : 1,152,375,703.38 = 353,443,791.87 : x
  2. Step 2: Convert to fraction form
    768,365,466.89/1,152,375,703.38 = 353,443,791.87/x
  3. Step 3: Cross multiply
    768,365,466.89x = 1,152,375,703.38 × 353,443,791.87
  4. Step 4: Simplify right side
    768,365,466.89x = 407,300,038,261,485,632
  5. Step 5: Solve for x
    x = 407,300,038,261,485,632/768,365,466.89
  6. Step 6: Final answer
    x = 530,086,340.18

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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.