Home / 645,104.64-890,146.56-358,627.20

Finding the Fourth Proportional to 645,104.64, 890,146.56 and 358,627.20

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Solution

The fourth proportional to 645,104.64, 890,146.56 and 358,627.20 is: 494,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,104.64 : 890,146.56 = 358,627.20 : x
  2. Step 2: Convert to fraction form
    645,104.64/890,146.56 = 358,627.20/x
  3. Step 3: Cross multiply
    645,104.64x = 890,146.56 × 358,627.20
  4. Step 4: Simplify right side
    645,104.64x = 319,230,768,402.43
  5. Step 5: Solve for x
    x = 319,230,768,402.43/645,104.64
  6. Step 6: Final answer
    x = 494,851.14

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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.