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Finding the Fourth Proportional to 630,134.40, 945,201.60 and 346,699.20

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Solution

The fourth proportional to 630,134.40, 945,201.60 and 346,699.20 is: 520,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,134.40 : 945,201.60 = 346,699.20 : x
  2. Step 2: Convert to fraction form
    630,134.40/945,201.60 = 346,699.20/x
  3. Step 3: Cross multiply
    630,134.40x = 945,201.60 × 346,699.20
  4. Step 4: Simplify right side
    630,134.40x = 327,700,638,558.72
  5. Step 5: Solve for x
    x = 327,700,638,558.72/630,134.40
  6. Step 6: Final answer
    x = 520,048.80

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Similar ratio
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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.