Home / 676,364.12-933,171.18-389,845.28

Finding the Fourth Proportional to 676,364.12, 933,171.18 and 389,845.28

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Solution

The fourth proportional to 676,364.12, 933,171.18 and 389,845.28 is: 537,864.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,364.12 : 933,171.18 = 389,845.28 : x
  2. Step 2: Convert to fraction form
    676,364.12/933,171.18 = 389,845.28/x
  3. Step 3: Cross multiply
    676,364.12x = 933,171.18 × 389,845.28
  4. Step 4: Simplify right side
    676,364.12x = 363,792,379,955.03
  5. Step 5: Solve for x
    x = 363,792,379,955.03/676,364.12
  6. Step 6: Final answer
    x = 537,864.69

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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.