Home / 690,904,770.55-953,447,200.94-393,546,900.07

Finding the Fourth Proportional to 690,904,770.55, 953,447,200.94 and 393,546,900.07

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Solution

The fourth proportional to 690,904,770.55, 953,447,200.94 and 393,546,900.07 is: 543,093,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,904,770.55 : 953,447,200.94 = 393,546,900.07 : x
  2. Step 2: Convert to fraction form
    690,904,770.55/953,447,200.94 = 393,546,900.07/x
  3. Step 3: Cross multiply
    690,904,770.55x = 953,447,200.94 × 393,546,900.07
  4. Step 4: Simplify right side
    690,904,770.55x = 375,226,190,308,387,648
  5. Step 5: Solve for x
    x = 375,226,190,308,387,648/690,904,770.55
  6. Step 6: Final answer
    x = 543,093,934.65

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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.