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Finding the Fourth Proportional to 393,963,347.60, 590,945,021.40 and 362,218,605.20

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Solution

The fourth proportional to 393,963,347.60, 590,945,021.40 and 362,218,605.20 is: 543,327,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,963,347.60 : 590,945,021.40 = 362,218,605.20 : x
  2. Step 2: Convert to fraction form
    393,963,347.60/590,945,021.40 = 362,218,605.20/x
  3. Step 3: Cross multiply
    393,963,347.60x = 590,945,021.40 × 362,218,605.20
  4. Step 4: Simplify right side
    393,963,347.60x = 214,051,281,401,392,128
  5. Step 5: Solve for x
    x = 214,051,281,401,392,128/393,963,347.60
  6. Step 6: Final answer
    x = 543,327,907.80

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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.