Home / 438,702,522.21-654,131,666.88-426,649,440.33

Finding the Fourth Proportional to 438,702,522.21, 654,131,666.88 and 426,649,440.33

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Solution

The fourth proportional to 438,702,522.21, 654,131,666.88 and 426,649,440.33 is: 636,159,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,702,522.21 : 654,131,666.88 = 426,649,440.33 : x
  2. Step 2: Convert to fraction form
    438,702,522.21/654,131,666.88 = 426,649,440.33/x
  3. Step 3: Cross multiply
    438,702,522.21x = 654,131,666.88 × 426,649,440.33
  4. Step 4: Simplify right side
    438,702,522.21x = 279,084,909,576,481,984
  5. Step 5: Solve for x
    x = 279,084,909,576,481,984/438,702,522.21
  6. Step 6: Final answer
    x = 636,159,801.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.