Home / 1,290,003,115-1,935,011,758.92-320,654,731

Finding the Fourth Proportional to 1,290,003,115, 1,935,011,758.92 and 320,654,731

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Solution

The fourth proportional to 1,290,003,115, 1,935,011,758.92 and 320,654,731 is: 480,983,857.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,003,115 : 1,935,011,758.92 = 320,654,731 : x
  2. Step 2: Convert to fraction form
    1,290,003,115/1,935,011,758.92 = 320,654,731/x
  3. Step 3: Cross multiply
    1,290,003,115x = 1,935,011,758.92 × 320,654,731
  4. Step 4: Simplify right side
    1,290,003,115x = 620,470,675,038,329,472
  5. Step 5: Solve for x
    x = 620,470,675,038,329,472/1,290,003,115
  6. Step 6: Final answer
    x = 480,983,857.96

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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.