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Finding the Fourth Proportional to 628,266.40, 942,399.60 and 503,850.40

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Solution

The fourth proportional to 628,266.40, 942,399.60 and 503,850.40 is: 755,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,266.40 : 942,399.60 = 503,850.40 : x
  2. Step 2: Convert to fraction form
    628,266.40/942,399.60 = 503,850.40/x
  3. Step 3: Cross multiply
    628,266.40x = 942,399.60 × 503,850.40
  4. Step 4: Simplify right side
    628,266.40x = 474,828,415,419.84
  5. Step 5: Solve for x
    x = 474,828,415,419.84/628,266.40
  6. Step 6: Final answer
    x = 755,775.60

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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.