Home / 457,929.60-686,894.40-209,097.60

Finding the Fourth Proportional to 457,929.60, 686,894.40 and 209,097.60

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Solution

The fourth proportional to 457,929.60, 686,894.40 and 209,097.60 is: 313,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,929.60 : 686,894.40 = 209,097.60 : x
  2. Step 2: Convert to fraction form
    457,929.60/686,894.40 = 209,097.60/x
  3. Step 3: Cross multiply
    457,929.60x = 686,894.40 × 209,097.60
  4. Step 4: Simplify right side
    457,929.60x = 143,627,970,493.44
  5. Step 5: Solve for x
    x = 143,627,970,493.44/457,929.60
  6. Step 6: Final answer
    x = 313,646.40

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.