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Finding the Fourth Proportional to 401,045.70, 601,568.55 and 398,280.90

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Solution

The fourth proportional to 401,045.70, 601,568.55 and 398,280.90 is: 597,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,045.70 : 601,568.55 = 398,280.90 : x
  2. Step 2: Convert to fraction form
    401,045.70/601,568.55 = 398,280.90/x
  3. Step 3: Cross multiply
    401,045.70x = 601,568.55 × 398,280.90
  4. Step 4: Simplify right side
    401,045.70x = 239,593,263,505.70
  5. Step 5: Solve for x
    x = 239,593,263,505.70/401,045.70
  6. Step 6: Final answer
    x = 597,421.35

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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.