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Finding the Fourth Proportional to 620,666.40, 930,999.60 and 496,250.40

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Solution

The fourth proportional to 620,666.40, 930,999.60 and 496,250.40 is: 744,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,666.40 : 930,999.60 = 496,250.40 : x
  2. Step 2: Convert to fraction form
    620,666.40/930,999.60 = 496,250.40/x
  3. Step 3: Cross multiply
    620,666.40x = 930,999.60 × 496,250.40
  4. Step 4: Simplify right side
    620,666.40x = 462,008,923,899.84
  5. Step 5: Solve for x
    x = 462,008,923,899.84/620,666.40
  6. Step 6: Final answer
    x = 744,375.60

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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.