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Finding the Fourth Proportional to 614,650.40, 921,975.60 and 490,234.40

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Solution

The fourth proportional to 614,650.40, 921,975.60 and 490,234.40 is: 735,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,650.40 : 921,975.60 = 490,234.40 : x
  2. Step 2: Convert to fraction form
    614,650.40/921,975.60 = 490,234.40/x
  3. Step 3: Cross multiply
    614,650.40x = 921,975.60 × 490,234.40
  4. Step 4: Simplify right side
    614,650.40x = 451,984,155,080.64
  5. Step 5: Solve for x
    x = 451,984,155,080.64/614,650.40
  6. Step 6: Final answer
    x = 735,351.60

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Half scale
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Double scale
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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.