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Finding the Fourth Proportional to 614,421.32, 848,061.78 and 400,149.32

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Solution

The fourth proportional to 614,421.32, 848,061.78 and 400,149.32 is: 552,310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,421.32 : 848,061.78 = 400,149.32 : x
  2. Step 2: Convert to fraction form
    614,421.32/848,061.78 = 400,149.32/x
  3. Step 3: Cross multiply
    614,421.32x = 848,061.78 × 400,149.32
  4. Step 4: Simplify right side
    614,421.32x = 339,351,344,584.99
  5. Step 5: Solve for x
    x = 339,351,344,584.99/614,421.32
  6. Step 6: Final answer
    x = 552,310.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.