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Finding the Fourth Proportional to 619,842.48, 930,261.84 and 320,410.68

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Solution

The fourth proportional to 619,842.48, 930,261.84 and 320,410.68 is: 480,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,842.48 : 930,261.84 = 320,410.68 : x
  2. Step 2: Convert to fraction form
    619,842.48/930,261.84 = 320,410.68/x
  3. Step 3: Cross multiply
    619,842.48x = 930,261.84 × 320,410.68
  4. Step 4: Simplify right side
    619,842.48x = 298,065,828,732.45
  5. Step 5: Solve for x
    x = 298,065,828,732.45/619,842.48
  6. Step 6: Final answer
    x = 480,873.51

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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.