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Finding the Fourth Proportional to 390,652.65, 588,906.98 and 364,612.57

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Solution

The fourth proportional to 390,652.65, 588,906.98 and 364,612.57 is: 549,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,652.65 : 588,906.98 = 364,612.57 : x
  2. Step 2: Convert to fraction form
    390,652.65/588,906.98 = 364,612.57/x
  3. Step 3: Cross multiply
    390,652.65x = 588,906.98 × 364,612.57
  4. Step 4: Simplify right side
    390,652.65x = 214,722,885,540.71
  5. Step 5: Solve for x
    x = 214,722,885,540.71/390,652.65
  6. Step 6: Final answer
    x = 549,651.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.