Home / 645,139,401.60-967,835,073.60-256,896,163.20

Finding the Fourth Proportional to 645,139,401.60, 967,835,073.60 and 256,896,163.20

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Solution

The fourth proportional to 645,139,401.60, 967,835,073.60 and 256,896,163.20 is: 385,394,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,139,401.60 : 967,835,073.60 = 256,896,163.20 : x
  2. Step 2: Convert to fraction form
    645,139,401.60/967,835,073.60 = 256,896,163.20/x
  3. Step 3: Cross multiply
    645,139,401.60x = 967,835,073.60 × 256,896,163.20
  4. Step 4: Simplify right side
    645,139,401.60x = 248,633,117,018,229,600
  5. Step 5: Solve for x
    x = 248,633,117,018,229,600/645,139,401.60
  6. Step 6: Final answer
    x = 385,394,406.85

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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.