Home / 786,329.40-1,179,234.90-287,628.60

Finding the Fourth Proportional to 786,329.40, 1,179,234.90 and 287,628.60

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Solution

The fourth proportional to 786,329.40, 1,179,234.90 and 287,628.60 is: 431,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,329.40 : 1,179,234.90 = 287,628.60 : x
  2. Step 2: Convert to fraction form
    786,329.40/1,179,234.90 = 287,628.60/x
  3. Step 3: Cross multiply
    786,329.40x = 1,179,234.90 × 287,628.60
  4. Step 4: Simplify right side
    786,329.40x = 339,181,683,358.14
  5. Step 5: Solve for x
    x = 339,181,683,358.14/786,329.40
  6. Step 6: Final answer
    x = 431,348.09

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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.