Home / 780,965,755.24-1,077,729,785.76-428,547,643.60

Finding the Fourth Proportional to 780,965,755.24, 1,077,729,785.76 and 428,547,643.60

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Solution

The fourth proportional to 780,965,755.24, 1,077,729,785.76 and 428,547,643.60 is: 591,394,125.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,755.24 : 1,077,729,785.76 = 428,547,643.60 : x
  2. Step 2: Convert to fraction form
    780,965,755.24/1,077,729,785.76 = 428,547,643.60/x
  3. Step 3: Cross multiply
    780,965,755.24x = 1,077,729,785.76 × 428,547,643.60
  4. Step 4: Simplify right side
    780,965,755.24x = 461,858,560,124,980,864
  5. Step 5: Solve for x
    x = 461,858,560,124,980,864/780,965,755.24
  6. Step 6: Final answer
    x = 591,394,125.83

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1.5x scale

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.