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Finding the Fourth Proportional to 561,748.12, 775,156.70 and 320,016.29

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Solution

The fourth proportional to 561,748.12, 775,156.70 and 320,016.29 is: 441,590.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,748.12 : 775,156.70 = 320,016.29 : x
  2. Step 2: Convert to fraction form
    561,748.12/775,156.70 = 320,016.29/x
  3. Step 3: Cross multiply
    561,748.12x = 775,156.70 × 320,016.29
  4. Step 4: Simplify right side
    561,748.12x = 248,062,768,226.90
  5. Step 5: Solve for x
    x = 248,062,768,226.90/561,748.12
  6. Step 6: Final answer
    x = 441,590.74

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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.