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Finding the Fourth Proportional to 520,770.01, 780,445.60 and 318,436.97

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Solution

The fourth proportional to 520,770.01, 780,445.60 and 318,436.97 is: 477,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,770.01 : 780,445.60 = 318,436.97 : x
  2. Step 2: Convert to fraction form
    520,770.01/780,445.60 = 318,436.97/x
  3. Step 3: Cross multiply
    520,770.01x = 780,445.60 × 318,436.97
  4. Step 4: Simplify right side
    520,770.01x = 248,522,732,113.83
  5. Step 5: Solve for x
    x = 248,522,732,113.83/520,770.01
  6. Step 6: Final answer
    x = 477,221.67

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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.