Home / 690,451.50-1,035,690.21-191,828.46

Finding the Fourth Proportional to 690,451.50, 1,035,690.21 and 191,828.46

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Solution

The fourth proportional to 690,451.50, 1,035,690.21 and 191,828.46 is: 287,746.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,451.50 : 1,035,690.21 = 191,828.46 : x
  2. Step 2: Convert to fraction form
    690,451.50/1,035,690.21 = 191,828.46/x
  3. Step 3: Cross multiply
    690,451.50x = 1,035,690.21 × 191,828.46
  4. Step 4: Simplify right side
    690,451.50x = 198,674,858,021.38
  5. Step 5: Solve for x
    x = 198,674,858,021.38/690,451.50
  6. Step 6: Final answer
    x = 287,746.29

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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.