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Finding the Fourth Proportional to 707,075,602.59, 975,794,741.97 and 393,809,955.87

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Solution

The fourth proportional to 707,075,602.59, 975,794,741.97 and 393,809,955.87 is: 543,474,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,075,602.59 : 975,794,741.97 = 393,809,955.87 : x
  2. Step 2: Convert to fraction form
    707,075,602.59/975,794,741.97 = 393,809,955.87/x
  3. Step 3: Cross multiply
    707,075,602.59x = 975,794,741.97 × 393,809,955.87
  4. Step 4: Simplify right side
    707,075,602.59x = 384,277,684,273,383,744
  5. Step 5: Solve for x
    x = 384,277,684,273,383,744/707,075,602.59
  6. Step 6: Final answer
    x = 543,474,676.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.