Home / 405,869.36-560,061.58-274,780.36

Finding the Fourth Proportional to 405,869.36, 560,061.58 and 274,780.36

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Solution

The fourth proportional to 405,869.36, 560,061.58 and 274,780.36 is: 379,171.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,869.36 : 560,061.58 = 274,780.36 : x
  2. Step 2: Convert to fraction form
    405,869.36/560,061.58 = 274,780.36/x
  3. Step 3: Cross multiply
    405,869.36x = 560,061.58 × 274,780.36
  4. Step 4: Simplify right side
    405,869.36x = 153,893,922,574.57
  5. Step 5: Solve for x
    x = 153,893,922,574.57/405,869.36
  6. Step 6: Final answer
    x = 379,171.08

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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.