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Finding the Fourth Proportional to 565,514.02, 780,410.19 and 310,866.76

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Solution

The fourth proportional to 565,514.02, 780,410.19 and 310,866.76 is: 428,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,514.02 : 780,410.19 = 310,866.76 : x
  2. Step 2: Convert to fraction form
    565,514.02/780,410.19 = 310,866.76/x
  3. Step 3: Cross multiply
    565,514.02x = 780,410.19 × 310,866.76
  4. Step 4: Simplify right side
    565,514.02x = 242,603,587,236.28
  5. Step 5: Solve for x
    x = 242,603,587,236.28/565,514.02
  6. Step 6: Final answer
    x = 428,996.59

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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.