Home / 1,102,994.65-1,521,896.47-643,900.87

Finding the Fourth Proportional to 1,102,994.65, 1,521,896.47 and 643,900.87

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Solution

The fourth proportional to 1,102,994.65, 1,521,896.47 and 643,900.87 is: 888,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,994.65 : 1,521,896.47 = 643,900.87 : x
  2. Step 2: Convert to fraction form
    1,102,994.65/1,521,896.47 = 643,900.87/x
  3. Step 3: Cross multiply
    1,102,994.65x = 1,521,896.47 × 643,900.87
  4. Step 4: Simplify right side
    1,102,994.65x = 979,950,461,082.93
  5. Step 5: Solve for x
    x = 979,950,461,082.93/1,102,994.65
  6. Step 6: Final answer
    x = 888,445.34

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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.