Home / 405,256.00-559,306.74-391,947.93

Finding the Fourth Proportional to 405,256.00, 559,306.74 and 391,947.93

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Solution

The fourth proportional to 405,256.00, 559,306.74 and 391,947.93 is: 540,939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,256.00 : 559,306.74 = 391,947.93 : x
  2. Step 2: Convert to fraction form
    405,256.00/559,306.74 = 391,947.93/x
  3. Step 3: Cross multiply
    405,256.00x = 559,306.74 × 391,947.93
  4. Step 4: Simplify right side
    405,256.00x = 219,219,118,243.15
  5. Step 5: Solve for x
    x = 219,219,118,243.15/405,256.00
  6. Step 6: Final answer
    x = 540,939.85

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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.