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Finding the Fourth Proportional to 628,539.40, 942,809.10 and 452,704.60

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Solution

The fourth proportional to 628,539.40, 942,809.10 and 452,704.60 is: 679,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,539.40 : 942,809.10 = 452,704.60 : x
  2. Step 2: Convert to fraction form
    628,539.40/942,809.10 = 452,704.60/x
  3. Step 3: Cross multiply
    628,539.40x = 942,809.10 × 452,704.60
  4. Step 4: Simplify right side
    628,539.40x = 426,814,016,491.86
  5. Step 5: Solve for x
    x = 426,814,016,491.86/628,539.40
  6. Step 6: Final answer
    x = 679,056.90

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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.