Home / 719,977.55-993,549.96-397,680.71

Finding the Fourth Proportional to 719,977.55, 993,549.96 and 397,680.71

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Solution

The fourth proportional to 719,977.55, 993,549.96 and 397,680.71 is: 548,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,977.55 : 993,549.96 = 397,680.71 : x
  2. Step 2: Convert to fraction form
    719,977.55/993,549.96 = 397,680.71/x
  3. Step 3: Cross multiply
    719,977.55x = 993,549.96 × 397,680.71
  4. Step 4: Simplify right side
    719,977.55x = 395,115,648,545.52
  5. Step 5: Solve for x
    x = 395,115,648,545.52/719,977.55
  6. Step 6: Final answer
    x = 548,788.85

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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.