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Finding the Fourth Proportional to 645,317.60, 967,515.60 and 364,920.80

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Solution

The fourth proportional to 645,317.60, 967,515.60 and 364,920.80 is: 547,120.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,317.60 : 967,515.60 = 364,920.80 : x
  2. Step 2: Convert to fraction form
    645,317.60/967,515.60 = 364,920.80/x
  3. Step 3: Cross multiply
    645,317.60x = 967,515.60 × 364,920.80
  4. Step 4: Simplify right side
    645,317.60x = 353,066,566,764.48
  5. Step 5: Solve for x
    x = 353,066,566,764.48/645,317.60
  6. Step 6: Final answer
    x = 547,120.62

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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.