Home / 645,175.26-890,291.43-358,677.90

Finding the Fourth Proportional to 645,175.26, 890,291.43 and 358,677.90

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Solution

The fourth proportional to 645,175.26, 890,291.43 and 358,677.90 is: 494,947.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,175.26 : 890,291.43 = 358,677.90 : x
  2. Step 2: Convert to fraction form
    645,175.26/890,291.43 = 358,677.90/x
  3. Step 3: Cross multiply
    645,175.26x = 890,291.43 × 358,677.90
  4. Step 4: Simplify right side
    645,175.26x = 319,327,860,500.40
  5. Step 5: Solve for x
    x = 319,327,860,500.40/645,175.26
  6. Step 6: Final answer
    x = 494,947.47

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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.