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Finding the Fourth Proportional to 586,354.21, 809,170.37 and 318,082.21

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Solution

The fourth proportional to 586,354.21, 809,170.37 and 318,082.21 is: 438,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,354.21 : 809,170.37 = 318,082.21 : x
  2. Step 2: Convert to fraction form
    586,354.21/809,170.37 = 318,082.21/x
  3. Step 3: Cross multiply
    586,354.21x = 809,170.37 × 318,082.21
  4. Step 4: Simplify right side
    586,354.21x = 257,382,699,556.12
  5. Step 5: Solve for x
    x = 257,382,699,556.12/586,354.21
  6. Step 6: Final answer
    x = 438,954.30

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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.