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Finding the Fourth Proportional to 347,652.20, 520,700.70 and 285,444.20

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Solution

The fourth proportional to 347,652.20, 520,700.70 and 285,444.20 is: 427,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,652.20 : 520,700.70 = 285,444.20 : x
  2. Step 2: Convert to fraction form
    347,652.20/520,700.70 = 285,444.20/x
  3. Step 3: Cross multiply
    347,652.20x = 520,700.70 × 285,444.20
  4. Step 4: Simplify right side
    347,652.20x = 148,630,994,750.94
  5. Step 5: Solve for x
    x = 148,630,994,750.94/347,652.20
  6. Step 6: Final answer
    x = 427,527.84

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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.