Home / 812,021,835.78-1,120,560,126.99-440,735,895.54

Finding the Fourth Proportional to 812,021,835.78, 1,120,560,126.99 and 440,735,895.54

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Solution

The fourth proportional to 812,021,835.78, 1,120,560,126.99 and 440,735,895.54 is: 608,199,249.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,835.78 : 1,120,560,126.99 = 440,735,895.54 : x
  2. Step 2: Convert to fraction form
    812,021,835.78/1,120,560,126.99 = 440,735,895.54/x
  3. Step 3: Cross multiply
    812,021,835.78x = 1,120,560,126.99 × 440,735,895.54
  4. Step 4: Simplify right side
    812,021,835.78x = 493,871,071,075,353,792
  5. Step 5: Solve for x
    x = 493,871,071,075,353,792/812,021,835.78
  6. Step 6: Final answer
    x = 608,199,249.47

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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.