Home / 1,198,689.54-1,654,242.03-689,392.50

Finding the Fourth Proportional to 1,198,689.54, 1,654,242.03 and 689,392.50

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Solution

The fourth proportional to 1,198,689.54, 1,654,242.03 and 689,392.50 is: 951,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,689.54 : 1,654,242.03 = 689,392.50 : x
  2. Step 2: Convert to fraction form
    1,198,689.54/1,654,242.03 = 689,392.50/x
  3. Step 3: Cross multiply
    1,198,689.54x = 1,654,242.03 × 689,392.50
  4. Step 4: Simplify right side
    1,198,689.54x = 1,140,422,048,666.77
  5. Step 5: Solve for x
    x = 1,140,422,048,666.77/1,198,689.54
  6. Step 6: Final answer
    x = 951,390.67

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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.