Home / 448,123.20-672,184.80-389,074.20

Finding the Fourth Proportional to 448,123.20, 672,184.80 and 389,074.20

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Solution

The fourth proportional to 448,123.20, 672,184.80 and 389,074.20 is: 583,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,123.20 : 672,184.80 = 389,074.20 : x
  2. Step 2: Convert to fraction form
    448,123.20/672,184.80 = 389,074.20/x
  3. Step 3: Cross multiply
    448,123.20x = 672,184.80 × 389,074.20
  4. Step 4: Simplify right side
    448,123.20x = 261,529,763,312.16
  5. Step 5: Solve for x
    x = 261,529,763,312.16/448,123.20
  6. Step 6: Final answer
    x = 583,611.30

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Similar ratio
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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.