Home / 812,021,754.93-1,120,560,015.70-440,735,814.69

Finding the Fourth Proportional to 812,021,754.93, 1,120,560,015.70 and 440,735,814.69

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Solution

The fourth proportional to 812,021,754.93, 1,120,560,015.70 and 440,735,814.69 is: 608,199,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,754.93 : 1,120,560,015.70 = 440,735,814.69 : x
  2. Step 2: Convert to fraction form
    812,021,754.93/1,120,560,015.70 = 440,735,814.69/x
  3. Step 3: Cross multiply
    812,021,754.93x = 1,120,560,015.70 × 440,735,814.69
  4. Step 4: Simplify right side
    812,021,754.93x = 493,870,931,428,578,688
  5. Step 5: Solve for x
    x = 493,870,931,428,578,688/812,021,754.93
  6. Step 6: Final answer
    x = 608,199,138.05

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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.