Home / 641,379,090.56-961,717,918.01-509,280,507.56

Finding the Fourth Proportional to 641,379,090.56, 961,717,918.01 and 509,280,507.56

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Solution

The fourth proportional to 641,379,090.56, 961,717,918.01 and 509,280,507.56 is: 763,642,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,379,090.56 : 961,717,918.01 = 509,280,507.56 : x
  2. Step 2: Convert to fraction form
    641,379,090.56/961,717,918.01 = 509,280,507.56/x
  3. Step 3: Cross multiply
    641,379,090.56x = 961,717,918.01 × 509,280,507.56
  4. Step 4: Simplify right side
    641,379,090.56x = 489,784,189,413,537,152
  5. Step 5: Solve for x
    x = 489,784,189,413,537,152/641,379,090.56
  6. Step 6: Final answer
    x = 763,642,277.44

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Double scale
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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.