Home / 719,979.88-993,553.20-397,683.05

Finding the Fourth Proportional to 719,979.88, 993,553.20 and 397,683.05

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Solution

The fourth proportional to 719,979.88, 993,553.20 and 397,683.05 is: 548,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,979.88 : 993,553.20 = 397,683.05 : x
  2. Step 2: Convert to fraction form
    719,979.88/993,553.20 = 397,683.05/x
  3. Step 3: Cross multiply
    719,979.88x = 993,553.20 × 397,683.05
  4. Step 4: Simplify right side
    719,979.88x = 395,119,269,397.14
  5. Step 5: Solve for x
    x = 395,119,269,397.14/719,979.88
  6. Step 6: Final answer
    x = 548,792.10

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1.5x scale

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.