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Finding the Fourth Proportional to 448,676.30, 672,030.30 and 389,627.30

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Solution

The fourth proportional to 448,676.30, 672,030.30 and 389,627.30 is: 583,586.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,676.30 : 672,030.30 = 389,627.30 : x
  2. Step 2: Convert to fraction form
    448,676.30/672,030.30 = 389,627.30/x
  3. Step 3: Cross multiply
    448,676.30x = 672,030.30 × 389,627.30
  4. Step 4: Simplify right side
    448,676.30x = 261,841,351,307.19
  5. Step 5: Solve for x
    x = 261,841,351,307.19/448,676.30
  6. Step 6: Final answer
    x = 583,586.32

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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.