Home / 505,237,299.76-697,228,554.21-285,220,725.76

Finding the Fourth Proportional to 505,237,299.76, 697,228,554.21 and 285,220,725.76

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Solution

The fourth proportional to 505,237,299.76, 697,228,554.21 and 285,220,725.76 is: 393,605,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,237,299.76 : 697,228,554.21 = 285,220,725.76 : x
  2. Step 2: Convert to fraction form
    505,237,299.76/697,228,554.21 = 285,220,725.76/x
  3. Step 3: Cross multiply
    505,237,299.76x = 697,228,554.21 × 285,220,725.76
  4. Step 4: Simplify right side
    505,237,299.76x = 198,864,034,248,885,568
  5. Step 5: Solve for x
    x = 198,864,034,248,885,568/505,237,299.76
  6. Step 6: Final answer
    x = 393,605,211.54

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1.5x scale

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.