Home / 726,245.40-1,089,368.10-488,299.80

Finding the Fourth Proportional to 726,245.40, 1,089,368.10 and 488,299.80

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Solution

The fourth proportional to 726,245.40, 1,089,368.10 and 488,299.80 is: 732,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,245.40 : 1,089,368.10 = 488,299.80 : x
  2. Step 2: Convert to fraction form
    726,245.40/1,089,368.10 = 488,299.80/x
  3. Step 3: Cross multiply
    726,245.40x = 1,089,368.10 × 488,299.80
  4. Step 4: Simplify right side
    726,245.40x = 531,938,225,356.38
  5. Step 5: Solve for x
    x = 531,938,225,356.38/726,245.40
  6. Step 6: Final answer
    x = 732,449.70

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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.