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Finding the Fourth Proportional to 720,252.47, 993,946.37 and 397,960.29

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Solution

The fourth proportional to 720,252.47, 993,946.37 and 397,960.29 is: 549,184.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,252.47 : 993,946.37 = 397,960.29 : x
  2. Step 2: Convert to fraction form
    720,252.47/993,946.37 = 397,960.29/x
  3. Step 3: Cross multiply
    720,252.47x = 993,946.37 × 397,960.29
  4. Step 4: Simplify right side
    720,252.47x = 395,551,183,659.85
  5. Step 5: Solve for x
    x = 395,551,183,659.85/720,252.47
  6. Step 6: Final answer
    x = 549,184.07

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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.