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Finding the Fourth Proportional to 676,326.44, 933,296.74 and 389,829.16

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Solution

The fourth proportional to 676,326.44, 933,296.74 and 389,829.16 is: 537,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,326.44 : 933,296.74 = 389,829.16 : x
  2. Step 2: Convert to fraction form
    676,326.44/933,296.74 = 389,829.16/x
  3. Step 3: Cross multiply
    676,326.44x = 933,296.74 × 389,829.16
  4. Step 4: Simplify right side
    676,326.44x = 363,826,284,184.94
  5. Step 5: Solve for x
    x = 363,826,284,184.94/676,326.44
  6. Step 6: Final answer
    x = 537,944.79

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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.