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Finding the Fourth Proportional to 400,965.40, 601,601.70 and 394,667.80

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Solution

The fourth proportional to 400,965.40, 601,601.70 and 394,667.80 is: 592,152.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,965.40 : 601,601.70 = 394,667.80 : x
  2. Step 2: Convert to fraction form
    400,965.40/601,601.70 = 394,667.80/x
  3. Step 3: Cross multiply
    400,965.40x = 601,601.70 × 394,667.80
  4. Step 4: Simplify right side
    400,965.40x = 237,432,819,415.26
  5. Step 5: Solve for x
    x = 237,432,819,415.26/400,965.40
  6. Step 6: Final answer
    x = 592,152.89

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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.