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Finding the Fourth Proportional to 719,657.55, 993,121.02 and 397,360.71

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Solution

The fourth proportional to 719,657.55, 993,121.02 and 397,360.71 is: 548,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,657.55 : 993,121.02 = 397,360.71 : x
  2. Step 2: Convert to fraction form
    719,657.55/993,121.02 = 397,360.71/x
  3. Step 3: Cross multiply
    719,657.55x = 993,121.02 × 397,360.71
  4. Step 4: Simplify right side
    719,657.55x = 394,627,273,623.12
  5. Step 5: Solve for x
    x = 394,627,273,623.12/719,657.55
  6. Step 6: Final answer
    x = 548,354.25

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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.