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Finding the Fourth Proportional to 448,069.80, 672,104.70 and 413,855.40

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Solution

The fourth proportional to 448,069.80, 672,104.70 and 413,855.40 is: 620,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,069.80 : 672,104.70 = 413,855.40 : x
  2. Step 2: Convert to fraction form
    448,069.80/672,104.70 = 413,855.40/x
  3. Step 3: Cross multiply
    448,069.80x = 672,104.70 × 413,855.40
  4. Step 4: Simplify right side
    448,069.80x = 278,154,159,460.38
  5. Step 5: Solve for x
    x = 278,154,159,460.38/448,069.80
  6. Step 6: Final answer
    x = 620,783.10

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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.