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Finding the Fourth Proportional to 586,655.56, 809,584.68 and 318,383.56

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Solution

The fourth proportional to 586,655.56, 809,584.68 and 318,383.56 is: 439,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,655.56 : 809,584.68 = 318,383.56 : x
  2. Step 2: Convert to fraction form
    586,655.56/809,584.68 = 318,383.56/x
  3. Step 3: Cross multiply
    586,655.56x = 809,584.68 × 318,383.56
  4. Step 4: Simplify right side
    586,655.56x = 257,758,452,539.86
  5. Step 5: Solve for x
    x = 257,758,452,539.86/586,655.56
  6. Step 6: Final answer
    x = 439,369.32

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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.