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Finding the Fourth Proportional to 447,003.40, 670,505.10 and 358,429.90

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Solution

The fourth proportional to 447,003.40, 670,505.10 and 358,429.90 is: 537,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,003.40 : 670,505.10 = 358,429.90 : x
  2. Step 2: Convert to fraction form
    447,003.40/670,505.10 = 358,429.90/x
  3. Step 3: Cross multiply
    447,003.40x = 670,505.10 × 358,429.90
  4. Step 4: Simplify right side
    447,003.40x = 240,329,075,942.49
  5. Step 5: Solve for x
    x = 240,329,075,942.49/447,003.40
  6. Step 6: Final answer
    x = 537,644.85

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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.