Home / 1,225,186.92-1,690,510.20-715,790.88

Finding the Fourth Proportional to 1,225,186.92, 1,690,510.20 and 715,790.88

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Solution

The fourth proportional to 1,225,186.92, 1,690,510.20 and 715,790.88 is: 987,646.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,186.92 : 1,690,510.20 = 715,790.88 : x
  2. Step 2: Convert to fraction form
    1,225,186.92/1,690,510.20 = 715,790.88/x
  3. Step 3: Cross multiply
    1,225,186.92x = 1,690,510.20 × 715,790.88
  4. Step 4: Simplify right side
    1,225,186.92x = 1,210,051,783,706.98
  5. Step 5: Solve for x
    x = 1,210,051,783,706.98/1,225,186.92
  6. Step 6: Final answer
    x = 987,646.67

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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.