Home / 809,859,056.85-1,117,599,934.46-438,572,591.73

Finding the Fourth Proportional to 809,859,056.85, 1,117,599,934.46 and 438,572,591.73

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Solution

The fourth proportional to 809,859,056.85, 1,117,599,934.46 and 438,572,591.73 is: 605,227,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,859,056.85 : 1,117,599,934.46 = 438,572,591.73 : x
  2. Step 2: Convert to fraction form
    809,859,056.85/1,117,599,934.46 = 438,572,591.73/x
  3. Step 3: Cross multiply
    809,859,056.85x = 1,117,599,934.46 × 438,572,591.73
  4. Step 4: Simplify right side
    809,859,056.85x = 490,148,699,771,207,488
  5. Step 5: Solve for x
    x = 490,148,699,771,207,488/809,859,056.85
  6. Step 6: Final answer
    x = 605,227,163.45

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Double scale
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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.