Home / 718,086,342.59-991,003,561.49-396,212,736.32

Finding the Fourth Proportional to 718,086,342.59, 991,003,561.49 and 396,212,736.32

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Solution

The fourth proportional to 718,086,342.59, 991,003,561.49 and 396,212,736.32 is: 546,798,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,086,342.59 : 991,003,561.49 = 396,212,736.32 : x
  2. Step 2: Convert to fraction form
    718,086,342.59/991,003,561.49 = 396,212,736.32/x
  3. Step 3: Cross multiply
    718,086,342.59x = 991,003,561.49 × 396,212,736.32
  4. Step 4: Simplify right side
    718,086,342.59x = 392,648,232,798,837,184
  5. Step 5: Solve for x
    x = 392,648,232,798,837,184/718,086,342.59
  6. Step 6: Final answer
    x = 546,798,079.16

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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.