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Finding the Fourth Proportional to 529,624.90, 793,400.55 and 318,636.10

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Solution

The fourth proportional to 529,624.90, 793,400.55 and 318,636.10 is: 477,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,624.90 : 793,400.55 = 318,636.10 : x
  2. Step 2: Convert to fraction form
    529,624.90/793,400.55 = 318,636.10/x
  3. Step 3: Cross multiply
    529,624.90x = 793,400.55 × 318,636.10
  4. Step 4: Simplify right side
    529,624.90x = 252,806,056,989.86
  5. Step 5: Solve for x
    x = 252,806,056,989.86/529,624.90
  6. Step 6: Final answer
    x = 477,330.38

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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.