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Finding the Fourth Proportional to 685,691,817.44, 946,249,507.19 and 372,428,273.41

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Solution

The fourth proportional to 685,691,817.44, 946,249,507.19 and 372,428,273.41 is: 513,948,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,691,817.44 : 946,249,507.19 = 372,428,273.41 : x
  2. Step 2: Convert to fraction form
    685,691,817.44/946,249,507.19 = 372,428,273.41/x
  3. Step 3: Cross multiply
    685,691,817.44x = 946,249,507.19 × 372,428,273.41
  4. Step 4: Simplify right side
    685,691,817.44x = 352,410,070,176,400,576
  5. Step 5: Solve for x
    x = 352,410,070,176,400,576/685,691,817.44
  6. Step 6: Final answer
    x = 513,948,192.49

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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.