Home / 389,543.58-533,672.18-374,976.79

Finding the Fourth Proportional to 389,543.58, 533,672.18 and 374,976.79

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Solution

The fourth proportional to 389,543.58, 533,672.18 and 374,976.79 is: 513,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,543.58 : 533,672.18 = 374,976.79 : x
  2. Step 2: Convert to fraction form
    389,543.58/533,672.18 = 374,976.79/x
  3. Step 3: Cross multiply
    389,543.58x = 533,672.18 × 374,976.79
  4. Step 4: Simplify right side
    389,543.58x = 200,114,680,968.70
  5. Step 5: Solve for x
    x = 200,114,680,968.70/389,543.58
  6. Step 6: Final answer
    x = 513,715.77

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.