Home / 642,752,045,581.78-886,997,967,684.78-353,720,304,970.39

Finding the Fourth Proportional to 642,752,045,581.78, 886,997,967,684.78 and 353,720,304,970.39

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Solution

The fourth proportional to 642,752,045,581.78, 886,997,967,684.78 and 353,720,304,970.39 is: 488,134,100,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,752,045,581.78 : 886,997,967,684.78 = 353,720,304,970.39 : x
  2. Step 2: Convert to fraction form
    642,752,045,581.78/886,997,967,684.78 = 353,720,304,970.39/x
  3. Step 3: Cross multiply
    642,752,045,581.78x = 886,997,967,684.78 × 353,720,304,970.39
  4. Step 4: Simplify right side
    642,752,045,581.78x = 313,749,191,637,576,531,836,928
  5. Step 5: Solve for x
    x = 313,749,191,637,576,531,836,928/642,752,045,581.78
  6. Step 6: Final answer
    x = 488,134,100,535.75

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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.