Home / 638,894.40-957,175.20-519,921.60

Finding the Fourth Proportional to 638,894.40, 957,175.20 and 519,921.60

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Solution

The fourth proportional to 638,894.40, 957,175.20 and 519,921.60 is: 778,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,894.40 : 957,175.20 = 519,921.60 : x
  2. Step 2: Convert to fraction form
    638,894.40/957,175.20 = 519,921.60/x
  3. Step 3: Cross multiply
    638,894.40x = 957,175.20 × 519,921.60
  4. Step 4: Simplify right side
    638,894.40x = 497,656,061,464.32
  5. Step 5: Solve for x
    x = 497,656,061,464.32/638,894.40
  6. Step 6: Final answer
    x = 778,933.20

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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.