Home / 393,342.18-589,566.76-345,865.38

Finding the Fourth Proportional to 393,342.18, 589,566.76 and 345,865.38

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Solution

The fourth proportional to 393,342.18, 589,566.76 and 345,865.38 is: 518,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,342.18 : 589,566.76 = 345,865.38 : x
  2. Step 2: Convert to fraction form
    393,342.18/589,566.76 = 345,865.38/x
  3. Step 3: Cross multiply
    393,342.18x = 589,566.76 × 345,865.38
  4. Step 4: Simplify right side
    393,342.18x = 203,910,731,482.77
  5. Step 5: Solve for x
    x = 203,910,731,482.77/393,342.18
  6. Step 6: Final answer
    x = 518,405.45

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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.