Home / 645,736.52-890,745.31-403,598.86

Finding the Fourth Proportional to 645,736.52, 890,745.31 and 403,598.86

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Solution

The fourth proportional to 645,736.52, 890,745.31 and 403,598.86 is: 556,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,736.52 : 890,745.31 = 403,598.86 : x
  2. Step 2: Convert to fraction form
    645,736.52/890,745.31 = 403,598.86/x
  3. Step 3: Cross multiply
    645,736.52x = 890,745.31 × 403,598.86
  4. Step 4: Simplify right side
    645,736.52x = 359,503,791,666.35
  5. Step 5: Solve for x
    x = 359,503,791,666.35/645,736.52
  6. Step 6: Final answer
    x = 556,734.49

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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.