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Finding the Fourth Proportional to 415,910.16, 624,215.16 and 389,666.16

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Solution

The fourth proportional to 415,910.16, 624,215.16 and 389,666.16 is: 584,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,910.16 : 624,215.16 = 389,666.16 : x
  2. Step 2: Convert to fraction form
    415,910.16/624,215.16 = 389,666.16/x
  3. Step 3: Cross multiply
    415,910.16x = 624,215.16 × 389,666.16
  4. Step 4: Simplify right side
    415,910.16x = 243,235,524,410.99
  5. Step 5: Solve for x
    x = 243,235,524,410.99/415,910.16
  6. Step 6: Final answer
    x = 584,827.08

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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.