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Finding the Fourth Proportional to 398,214.40, 596,630.40 and 336,006.40

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Solution

The fourth proportional to 398,214.40, 596,630.40 and 336,006.40 is: 503,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,214.40 : 596,630.40 = 336,006.40 : x
  2. Step 2: Convert to fraction form
    398,214.40/596,630.40 = 336,006.40/x
  3. Step 3: Cross multiply
    398,214.40x = 596,630.40 × 336,006.40
  4. Step 4: Simplify right side
    398,214.40x = 200,471,632,834.56
  5. Step 5: Solve for x
    x = 200,471,632,834.56/398,214.40
  6. Step 6: Final answer
    x = 503,426.38

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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.