Home / 629,799.48-869,060.34-354,128.04

Finding the Fourth Proportional to 629,799.48, 869,060.34 and 354,128.04

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Solution

The fourth proportional to 629,799.48, 869,060.34 and 354,128.04 is: 488,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,799.48 : 869,060.34 = 354,128.04 : x
  2. Step 2: Convert to fraction form
    629,799.48/869,060.34 = 354,128.04/x
  3. Step 3: Cross multiply
    629,799.48x = 869,060.34 × 354,128.04
  4. Step 4: Simplify right side
    629,799.48x = 307,758,634,845.93
  5. Step 5: Solve for x
    x = 307,758,634,845.93/629,799.48
  6. Step 6: Final answer
    x = 488,661.30

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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.