Home / 392,071,086.40-540,912,560.16-391,466,424.64

Finding the Fourth Proportional to 392,071,086.40, 540,912,560.16 and 391,466,424.64

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Solution

The fourth proportional to 392,071,086.40, 540,912,560.16 and 391,466,424.64 is: 540,078,351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,071,086.40 : 540,912,560.16 = 391,466,424.64 : x
  2. Step 2: Convert to fraction form
    392,071,086.40/540,912,560.16 = 391,466,424.64/x
  3. Step 3: Cross multiply
    392,071,086.40x = 540,912,560.16 × 391,466,424.64
  4. Step 4: Simplify right side
    392,071,086.40x = 211,749,105,968,704,096
  5. Step 5: Solve for x
    x = 211,749,105,968,704,096/392,071,086.40
  6. Step 6: Final answer
    x = 540,078,351.39

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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.