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Finding the Fourth Proportional to 520,529.85, 718,333.13 and 302,790.78

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Solution

The fourth proportional to 520,529.85, 718,333.13 and 302,790.78 is: 417,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,529.85 : 718,333.13 = 302,790.78 : x
  2. Step 2: Convert to fraction form
    520,529.85/718,333.13 = 302,790.78/x
  3. Step 3: Cross multiply
    520,529.85x = 718,333.13 × 302,790.78
  4. Step 4: Simplify right side
    520,529.85x = 217,504,649,489.52
  5. Step 5: Solve for x
    x = 217,504,649,489.52/520,529.85
  6. Step 6: Final answer
    x = 417,852.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.