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Finding the Fourth Proportional to 630,110.80, 945,166.20 and 393,720.40

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Solution

The fourth proportional to 630,110.80, 945,166.20 and 393,720.40 is: 590,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,110.80 : 945,166.20 = 393,720.40 : x
  2. Step 2: Convert to fraction form
    630,110.80/945,166.20 = 393,720.40/x
  3. Step 3: Cross multiply
    630,110.80x = 945,166.20 × 393,720.40
  4. Step 4: Simplify right side
    630,110.80x = 372,131,214,330.48
  5. Step 5: Solve for x
    x = 372,131,214,330.48/630,110.80
  6. Step 6: Final answer
    x = 590,580.60

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1.5x scale

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.