Home / 861,059,759.51-1,188,629,769.24-578,965,709.85

Finding the Fourth Proportional to 861,059,759.51, 1,188,629,769.24 and 578,965,709.85

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Solution

The fourth proportional to 861,059,759.51, 1,188,629,769.24 and 578,965,709.85 is: 799,219,648.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,059,759.51 : 1,188,629,769.24 = 578,965,709.85 : x
  2. Step 2: Convert to fraction form
    861,059,759.51/1,188,629,769.24 = 578,965,709.85/x
  3. Step 3: Cross multiply
    861,059,759.51x = 1,188,629,769.24 × 578,965,709.85
  4. Step 4: Simplify right side
    861,059,759.51x = 688,175,878,096,878,336
  5. Step 5: Solve for x
    x = 688,175,878,096,878,336/861,059,759.51
  6. Step 6: Final answer
    x = 799,219,648.23

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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.