Home / 703,567,839.33-971,040,010.41-390,402,943.92

Finding the Fourth Proportional to 703,567,839.33, 971,040,010.41 and 390,402,943.92

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Solution

The fourth proportional to 703,567,839.33, 971,040,010.41 and 390,402,943.92 is: 538,820,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,567,839.33 : 971,040,010.41 = 390,402,943.92 : x
  2. Step 2: Convert to fraction form
    703,567,839.33/971,040,010.41 = 390,402,943.92/x
  3. Step 3: Cross multiply
    703,567,839.33x = 971,040,010.41 × 390,402,943.92
  4. Step 4: Simplify right side
    703,567,839.33x = 379,096,878,728,171,456
  5. Step 5: Solve for x
    x = 379,096,878,728,171,456/703,567,839.33
  6. Step 6: Final answer
    x = 538,820,647.47

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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.