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Finding the Fourth Proportional to 565,766.73, 780,566.99 and 320,725.20

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Solution

The fourth proportional to 565,766.73, 780,566.99 and 320,725.20 is: 442,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,766.73 : 780,566.99 = 320,725.20 : x
  2. Step 2: Convert to fraction form
    565,766.73/780,566.99 = 320,725.20/x
  3. Step 3: Cross multiply
    565,766.73x = 780,566.99 × 320,725.20
  4. Step 4: Simplify right side
    565,766.73x = 250,347,502,377.52
  5. Step 5: Solve for x
    x = 250,347,502,377.52/565,766.73
  6. Step 6: Final answer
    x = 442,492.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.