Home / 726,246.40-1,089,369.60-411,318.40

Finding the Fourth Proportional to 726,246.40, 1,089,369.60 and 411,318.40

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Solution

The fourth proportional to 726,246.40, 1,089,369.60 and 411,318.40 is: 616,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,246.40 : 1,089,369.60 = 411,318.40 : x
  2. Step 2: Convert to fraction form
    726,246.40/1,089,369.60 = 411,318.40/x
  3. Step 3: Cross multiply
    726,246.40x = 1,089,369.60 × 411,318.40
  4. Step 4: Simplify right side
    726,246.40x = 448,077,760,880.64
  5. Step 5: Solve for x
    x = 448,077,760,880.64/726,246.40
  6. Step 6: Final answer
    x = 616,977.60

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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.