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Finding the Fourth Proportional to 520,313.49, 780,452.42 and 220,601.07

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Solution

The fourth proportional to 520,313.49, 780,452.42 and 220,601.07 is: 330,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,313.49 : 780,452.42 = 220,601.07 : x
  2. Step 2: Convert to fraction form
    520,313.49/780,452.42 = 220,601.07/x
  3. Step 3: Cross multiply
    520,313.49x = 780,452.42 × 220,601.07
  4. Step 4: Simplify right side
    520,313.49x = 172,168,637,833.08
  5. Step 5: Solve for x
    x = 172,168,637,833.08/520,313.49
  6. Step 6: Final answer
    x = 330,894.05

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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.