Home / 690,451.75-1,035,690.59-191,828.71

Finding the Fourth Proportional to 690,451.75, 1,035,690.59 and 191,828.71

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Solution

The fourth proportional to 690,451.75, 1,035,690.59 and 191,828.71 is: 287,746.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,451.75 : 1,035,690.59 = 191,828.71 : x
  2. Step 2: Convert to fraction form
    690,451.75/1,035,690.59 = 191,828.71/x
  3. Step 3: Cross multiply
    690,451.75x = 1,035,690.59 × 191,828.71
  4. Step 4: Simplify right side
    690,451.75x = 198,675,189,838.84
  5. Step 5: Solve for x
    x = 198,675,189,838.84/690,451.75
  6. Step 6: Final answer
    x = 287,746.67

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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.