Home / 780,965,684.96-1,077,729,688.77-428,547,573.26

Finding the Fourth Proportional to 780,965,684.96, 1,077,729,688.77 and 428,547,573.26

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Solution

The fourth proportional to 780,965,684.96, 1,077,729,688.77 and 428,547,573.26 is: 591,394,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,684.96 : 1,077,729,688.77 = 428,547,573.26 : x
  2. Step 2: Convert to fraction form
    780,965,684.96/1,077,729,688.77 = 428,547,573.26/x
  3. Step 3: Cross multiply
    780,965,684.96x = 1,077,729,688.77 × 428,547,573.26
  4. Step 4: Simplify right side
    780,965,684.96x = 461,858,442,752,638,528
  5. Step 5: Solve for x
    x = 461,858,442,752,638,528/780,965,684.96
  6. Step 6: Final answer
    x = 591,394,028.76

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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.