Home / 1,247,562,818.72-1,721,568,483.30-682,938,473.12

Finding the Fourth Proportional to 1,247,562,818.72, 1,721,568,483.30 and 682,938,473.12

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Solution

The fourth proportional to 1,247,562,818.72, 1,721,568,483.30 and 682,938,473.12 is: 942,417,755.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,562,818.72 : 1,721,568,483.30 = 682,938,473.12 : x
  2. Step 2: Convert to fraction form
    1,247,562,818.72/1,721,568,483.30 = 682,938,473.12/x
  3. Step 3: Cross multiply
    1,247,562,818.72x = 1,721,568,483.30 × 682,938,473.12
  4. Step 4: Simplify right side
    1,247,562,818.72x = 1,175,725,351,356,416,256
  5. Step 5: Solve for x
    x = 1,175,725,351,356,416,256/1,247,562,818.72
  6. Step 6: Final answer
    x = 942,417,755.41

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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.