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Finding the Fourth Proportional to 624,939.62, 862,416.42 and 338,459.72

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Solution

The fourth proportional to 624,939.62, 862,416.42 and 338,459.72 is: 467,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,939.62 : 862,416.42 = 338,459.72 : x
  2. Step 2: Convert to fraction form
    624,939.62/862,416.42 = 338,459.72/x
  3. Step 3: Cross multiply
    624,939.62x = 862,416.42 × 338,459.72
  4. Step 4: Simplify right side
    624,939.62x = 291,893,220,036.60
  5. Step 5: Solve for x
    x = 291,893,220,036.60/624,939.62
  6. Step 6: Final answer
    x = 467,074.28

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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.