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Finding the Fourth Proportional to 628,509.60, 942,764.40 and 404,560.80

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Solution

The fourth proportional to 628,509.60, 942,764.40 and 404,560.80 is: 606,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,509.60 : 942,764.40 = 404,560.80 : x
  2. Step 2: Convert to fraction form
    628,509.60/942,764.40 = 404,560.80/x
  3. Step 3: Cross multiply
    628,509.60x = 942,764.40 × 404,560.80
  4. Step 4: Simplify right side
    628,509.60x = 381,405,519,875.52
  5. Step 5: Solve for x
    x = 381,405,519,875.52/628,509.60
  6. Step 6: Final answer
    x = 606,841.20

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Similar ratio
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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.