Home / 782,919,690.76-1,079,426,212.16-641,269,078.56

Finding the Fourth Proportional to 782,919,690.76, 1,079,426,212.16 and 641,269,078.56

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Solution

The fourth proportional to 782,919,690.76, 1,079,426,212.16 and 641,269,078.56 is: 884,129,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,919,690.76 : 1,079,426,212.16 = 641,269,078.56 : x
  2. Step 2: Convert to fraction form
    782,919,690.76/1,079,426,212.16 = 641,269,078.56/x
  3. Step 3: Cross multiply
    782,919,690.76x = 1,079,426,212.16 × 641,269,078.56
  4. Step 4: Simplify right side
    782,919,690.76x = 692,202,652,445,354,240
  5. Step 5: Solve for x
    x = 692,202,652,445,354,240/782,919,690.76
  6. Step 6: Final answer
    x = 884,129,829.17

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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.