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Finding the Fourth Proportional to 529,626.90, 793,403.55 and 318,638.10

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Solution

The fourth proportional to 529,626.90, 793,403.55 and 318,638.10 is: 477,333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,626.90 : 793,403.55 = 318,638.10 : x
  2. Step 2: Convert to fraction form
    529,626.90/793,403.55 = 318,638.10/x
  3. Step 3: Cross multiply
    529,626.90x = 793,403.55 × 318,638.10
  4. Step 4: Simplify right side
    529,626.90x = 252,808,599,705.26
  5. Step 5: Solve for x
    x = 252,808,599,705.26/529,626.90
  6. Step 6: Final answer
    x = 477,333.38

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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.