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Finding the Fourth Proportional to 565,851.88, 780,684.34 and 320,810.44

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Solution

The fourth proportional to 565,851.88, 780,684.34 and 320,810.44 is: 442,609.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,851.88 : 780,684.34 = 320,810.44 : x
  2. Step 2: Convert to fraction form
    565,851.88/780,684.34 = 320,810.44/x
  3. Step 3: Cross multiply
    565,851.88x = 780,684.34 × 320,810.44
  4. Step 4: Simplify right side
    565,851.88x = 250,451,686,616.51
  5. Step 5: Solve for x
    x = 250,451,686,616.51/565,851.88
  6. Step 6: Final answer
    x = 442,609.98

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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.