Home / 718,766.60-1,078,149.90-438,830.60

Finding the Fourth Proportional to 718,766.60, 1,078,149.90 and 438,830.60

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Solution

The fourth proportional to 718,766.60, 1,078,149.90 and 438,830.60 is: 658,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,766.60 : 1,078,149.90 = 438,830.60 : x
  2. Step 2: Convert to fraction form
    718,766.60/1,078,149.90 = 438,830.60/x
  3. Step 3: Cross multiply
    718,766.60x = 1,078,149.90 × 438,830.60
  4. Step 4: Simplify right side
    718,766.60x = 473,125,167,506.94
  5. Step 5: Solve for x
    x = 473,125,167,506.94/718,766.60
  6. Step 6: Final answer
    x = 658,245.90

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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.