Home / 420,644.07-580,485.78-229,657.46

Finding the Fourth Proportional to 420,644.07, 580,485.78 and 229,657.46

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Solution

The fourth proportional to 420,644.07, 580,485.78 and 229,657.46 is: 316,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,644.07 : 580,485.78 = 229,657.46 : x
  2. Step 2: Convert to fraction form
    420,644.07/580,485.78 = 229,657.46/x
  3. Step 3: Cross multiply
    420,644.07x = 580,485.78 × 229,657.46
  4. Step 4: Simplify right side
    420,644.07x = 133,312,887,391.84
  5. Step 5: Solve for x
    x = 133,312,887,391.84/420,644.07
  6. Step 6: Final answer
    x = 316,925.63

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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.