Home / 838,420.75-1,157,023.38-456,450.27

Finding the Fourth Proportional to 838,420.75, 1,157,023.38 and 456,450.27

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Solution

The fourth proportional to 838,420.75, 1,157,023.38 and 456,450.27 is: 629,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,420.75 : 1,157,023.38 = 456,450.27 : x
  2. Step 2: Convert to fraction form
    838,420.75/1,157,023.38 = 456,450.27/x
  3. Step 3: Cross multiply
    838,420.75x = 1,157,023.38 × 456,450.27
  4. Step 4: Simplify right side
    838,420.75x = 528,123,634,197.31
  5. Step 5: Solve for x
    x = 528,123,634,197.31/838,420.75
  6. Step 6: Final answer
    x = 629,902.87

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1.5x scale

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.