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Finding the Fourth Proportional to 619,825.42, 930,236.28 and 320,393.72

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Solution

The fourth proportional to 619,825.42, 930,236.28 and 320,393.72 is: 480,848.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,825.42 : 930,236.28 = 320,393.72 : x
  2. Step 2: Convert to fraction form
    619,825.42/930,236.28 = 320,393.72/x
  3. Step 3: Cross multiply
    619,825.42x = 930,236.28 × 320,393.72
  4. Step 4: Simplify right side
    619,825.42x = 298,041,862,228.16
  5. Step 5: Solve for x
    x = 298,041,862,228.16/619,825.42
  6. Step 6: Final answer
    x = 480,848.08

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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.