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Finding the Fourth Proportional to 680,881,663.88, 939,674,593.88 and 383,582,283.56

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Solution

The fourth proportional to 680,881,663.88, 939,674,593.88 and 383,582,283.56 is: 529,376,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,881,663.88 : 939,674,593.88 = 383,582,283.56 : x
  2. Step 2: Convert to fraction form
    680,881,663.88/939,674,593.88 = 383,582,283.56/x
  3. Step 3: Cross multiply
    680,881,663.88x = 939,674,593.88 × 383,582,283.56
  4. Step 4: Simplify right side
    680,881,663.88x = 360,442,526,523,806,016
  5. Step 5: Solve for x
    x = 360,442,526,523,806,016/680,881,663.88
  6. Step 6: Final answer
    x = 529,376,168.64

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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.