Home / 676,388.07-933,403.10-389,920.23

Finding the Fourth Proportional to 676,388.07, 933,403.10 and 389,920.23

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Solution

The fourth proportional to 676,388.07, 933,403.10 and 389,920.23 is: 538,082.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,388.07 : 933,403.10 = 389,920.23 : x
  2. Step 2: Convert to fraction form
    676,388.07/933,403.10 = 389,920.23/x
  3. Step 3: Cross multiply
    676,388.07x = 933,403.10 × 389,920.23
  4. Step 4: Simplify right side
    676,388.07x = 363,952,749,485.11
  5. Step 5: Solve for x
    x = 363,952,749,485.11/676,388.07
  6. Step 6: Final answer
    x = 538,082.75

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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.