Home / 905,418,020.80-1,358,127,031.20-259,185,764.80

Finding the Fourth Proportional to 905,418,020.80, 1,358,127,031.20 and 259,185,764.80

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Solution

The fourth proportional to 905,418,020.80, 1,358,127,031.20 and 259,185,764.80 is: 388,778,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,418,020.80 : 1,358,127,031.20 = 259,185,764.80 : x
  2. Step 2: Convert to fraction form
    905,418,020.80/1,358,127,031.20 = 259,185,764.80/x
  3. Step 3: Cross multiply
    905,418,020.80x = 1,358,127,031.20 × 259,185,764.80
  4. Step 4: Simplify right side
    905,418,020.80x = 352,007,193,277,125,504
  5. Step 5: Solve for x
    x = 352,007,193,277,125,504/905,418,020.80
  6. Step 6: Final answer
    x = 388,778,647.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.