Home / 921,286,713.51-1,381,930,070.13-307,870,939.26

Finding the Fourth Proportional to 921,286,713.51, 1,381,930,070.13 and 307,870,939.26

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Solution

The fourth proportional to 921,286,713.51, 1,381,930,070.13 and 307,870,939.26 is: 461,806,408.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,286,713.51 : 1,381,930,070.13 = 307,870,939.26 : x
  2. Step 2: Convert to fraction form
    921,286,713.51/1,381,930,070.13 = 307,870,939.26/x
  3. Step 3: Cross multiply
    921,286,713.51x = 1,381,930,070.13 × 307,870,939.26
  4. Step 4: Simplify right side
    921,286,713.51x = 425,456,108,682,560,768
  5. Step 5: Solve for x
    x = 425,456,108,682,560,768/921,286,713.51
  6. Step 6: Final answer
    x = 461,806,408.84

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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.