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Finding the Fourth Proportional to 586,354.34, 809,170.54 and 318,082.34

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Solution

The fourth proportional to 586,354.34, 809,170.54 and 318,082.34 is: 438,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,354.34 : 809,170.54 = 318,082.34 : x
  2. Step 2: Convert to fraction form
    586,354.34/809,170.54 = 318,082.34/x
  3. Step 3: Cross multiply
    586,354.34x = 809,170.54 × 318,082.34
  4. Step 4: Simplify right side
    586,354.34x = 257,382,853,981.21
  5. Step 5: Solve for x
    x = 257,382,853,981.21/586,354.34
  6. Step 6: Final answer
    x = 438,954.47

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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.