Home / 459,683.20-688,212.60-407,195.20

Finding the Fourth Proportional to 459,683.20, 688,212.60 and 407,195.20

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Solution

The fourth proportional to 459,683.20, 688,212.60 and 407,195.20 is: 609,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,683.20 : 688,212.60 = 407,195.20 : x
  2. Step 2: Convert to fraction form
    459,683.20/688,212.60 = 407,195.20/x
  3. Step 3: Cross multiply
    459,683.20x = 688,212.60 × 407,195.20
  4. Step 4: Simplify right side
    459,683.20x = 280,236,867,299.52
  5. Step 5: Solve for x
    x = 280,236,867,299.52/459,683.20
  6. Step 6: Final answer
    x = 609,630.43

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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.