Home / 643,621.60-965,401.02-238,892.62

Finding the Fourth Proportional to 643,621.60, 965,401.02 and 238,892.62

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Solution

The fourth proportional to 643,621.60, 965,401.02 and 238,892.62 is: 358,327.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,621.60 : 965,401.02 = 238,892.62 : x
  2. Step 2: Convert to fraction form
    643,621.60/965,401.02 = 238,892.62/x
  3. Step 3: Cross multiply
    643,621.60x = 965,401.02 × 238,892.62
  4. Step 4: Simplify right side
    643,621.60x = 230,627,179,018.47
  5. Step 5: Solve for x
    x = 230,627,179,018.47/643,621.60
  6. Step 6: Final answer
    x = 358,327.28

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1.5x scale

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.