Home / 920,938-1,381,628.20-352,309.80

Finding the Fourth Proportional to 920,938, 1,381,628.20 and 352,309.80

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Solution

The fourth proportional to 920,938, 1,381,628.20 and 352,309.80 is: 528,549.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,938 : 1,381,628.20 = 352,309.80 : x
  2. Step 2: Convert to fraction form
    920,938/1,381,628.20 = 352,309.80/x
  3. Step 3: Cross multiply
    920,938x = 1,381,628.20 × 352,309.80
  4. Step 4: Simplify right side
    920,938x = 486,761,147,908.22
  5. Step 5: Solve for x
    x = 486,761,147,908.22/920,938
  6. Step 6: Final answer
    x = 528,549.31

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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.