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Finding the Fourth Proportional to 520,728.12, 780,811.20 and 236,263.44

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Solution

The fourth proportional to 520,728.12, 780,811.20 and 236,263.44 is: 354,267.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,728.12 : 780,811.20 = 236,263.44 : x
  2. Step 2: Convert to fraction form
    520,728.12/780,811.20 = 236,263.44/x
  3. Step 3: Cross multiply
    520,728.12x = 780,811.20 × 236,263.44
  4. Step 4: Simplify right side
    520,728.12x = 184,477,140,102.53
  5. Step 5: Solve for x
    x = 184,477,140,102.53/520,728.12
  6. Step 6: Final answer
    x = 354,267.67

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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.