Home / 646,917,869.82-970,021,440.09-318,671,137.02

Finding the Fourth Proportional to 646,917,869.82, 970,021,440.09 and 318,671,137.02

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Solution

The fourth proportional to 646,917,869.82, 970,021,440.09 and 318,671,137.02 is: 477,831,653.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,917,869.82 : 970,021,440.09 = 318,671,137.02 : x
  2. Step 2: Convert to fraction form
    646,917,869.82/970,021,440.09 = 318,671,137.02/x
  3. Step 3: Cross multiply
    646,917,869.82x = 970,021,440.09 × 318,671,137.02
  4. Step 4: Simplify right side
    646,917,869.82x = 309,117,835,247,258,112
  5. Step 5: Solve for x
    x = 309,117,835,247,258,112/646,917,869.82
  6. Step 6: Final answer
    x = 477,831,653.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.