Home / 812,021,750.18-1,120,560,009.15-440,735,809.94

Finding the Fourth Proportional to 812,021,750.18, 1,120,560,009.15 and 440,735,809.94

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Solution

The fourth proportional to 812,021,750.18, 1,120,560,009.15 and 440,735,809.94 is: 608,199,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,750.18 : 1,120,560,009.15 = 440,735,809.94 : x
  2. Step 2: Convert to fraction form
    812,021,750.18/1,120,560,009.15 = 440,735,809.94/x
  3. Step 3: Cross multiply
    812,021,750.18x = 1,120,560,009.15 × 440,735,809.94
  4. Step 4: Simplify right side
    812,021,750.18x = 493,870,923,213,496,320
  5. Step 5: Solve for x
    x = 493,870,923,213,496,320/812,021,750.18
  6. Step 6: Final answer
    x = 608,199,131.50

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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.