Home / 914,332,859.69-1,261,884,020.22-512,555,124.56

Finding the Fourth Proportional to 914,332,859.69, 1,261,884,020.22 and 512,555,124.56

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Solution

The fourth proportional to 914,332,859.69, 1,261,884,020.22 and 512,555,124.56 is: 707,384,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,332,859.69 : 1,261,884,020.22 = 512,555,124.56 : x
  2. Step 2: Convert to fraction form
    914,332,859.69/1,261,884,020.22 = 512,555,124.56/x
  3. Step 3: Cross multiply
    914,332,859.69x = 1,261,884,020.22 × 512,555,124.56
  4. Step 4: Simplify right side
    914,332,859.69x = 646,785,121,167,290,368
  5. Step 5: Solve for x
    x = 646,785,121,167,290,368/914,332,859.69
  6. Step 6: Final answer
    x = 707,384,749.78

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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.