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Finding the Fourth Proportional to 389,830.60, 584,745.90 and 366,502.60

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Solution

The fourth proportional to 389,830.60, 584,745.90 and 366,502.60 is: 549,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,830.60 : 584,745.90 = 366,502.60 : x
  2. Step 2: Convert to fraction form
    389,830.60/584,745.90 = 366,502.60/x
  3. Step 3: Cross multiply
    389,830.60x = 584,745.90 × 366,502.60
  4. Step 4: Simplify right side
    389,830.60x = 214,310,892,689.34
  5. Step 5: Solve for x
    x = 214,310,892,689.34/389,830.60
  6. Step 6: Final answer
    x = 549,753.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.