Home / 645,511.33-966,196.64-345,241.09

Finding the Fourth Proportional to 645,511.33, 966,196.64 and 345,241.09

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Solution

The fourth proportional to 645,511.33, 966,196.64 and 345,241.09 is: 516,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,511.33 : 966,196.64 = 345,241.09 : x
  2. Step 2: Convert to fraction form
    645,511.33/966,196.64 = 345,241.09/x
  3. Step 3: Cross multiply
    645,511.33x = 966,196.64 × 345,241.09
  4. Step 4: Simplify right side
    645,511.33x = 333,570,779,421.73
  5. Step 5: Solve for x
    x = 333,570,779,421.73/645,511.33
  6. Step 6: Final answer
    x = 516,754.34

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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.