Home / 1,689,431.15-2,331,396.41-915,042.74

Finding the Fourth Proportional to 1,689,431.15, 2,331,396.41 and 915,042.74

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Solution

The fourth proportional to 1,689,431.15, 2,331,396.41 and 915,042.74 is: 1,262,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,431.15 : 2,331,396.41 = 915,042.74 : x
  2. Step 2: Convert to fraction form
    1,689,431.15/2,331,396.41 = 915,042.74/x
  3. Step 3: Cross multiply
    1,689,431.15x = 2,331,396.41 × 915,042.74
  4. Step 4: Simplify right side
    1,689,431.15x = 2,133,327,342,800.37
  5. Step 5: Solve for x
    x = 2,133,327,342,800.37/1,689,431.15
  6. Step 6: Final answer
    x = 1,262,748.91

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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.