Home / 680,245,917,293.20-938,767,884,969.85-391,214,402,351.67

Finding the Fourth Proportional to 680,245,917,293.20, 938,767,884,969.85 and 391,214,402,351.67

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Solution

The fourth proportional to 680,245,917,293.20, 938,767,884,969.85 and 391,214,402,351.67 is: 539,892,276,791.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,245,917,293.20 : 938,767,884,969.85 = 391,214,402,351.67 : x
  2. Step 2: Convert to fraction form
    680,245,917,293.20/938,767,884,969.85 = 391,214,402,351.67/x
  3. Step 3: Cross multiply
    680,245,917,293.20x = 938,767,884,969.85 × 391,214,402,351.67
  4. Step 4: Simplify right side
    680,245,917,293.20x = 367,259,517,065,421,102,514,176
  5. Step 5: Solve for x
    x = 367,259,517,065,421,102,514,176/680,245,917,293.20
  6. Step 6: Final answer
    x = 539,892,276,791.31

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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.