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Finding the Fourth Proportional to 586,590.30, 809,494.62 and 318,318.30

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Solution

The fourth proportional to 586,590.30, 809,494.62 and 318,318.30 is: 439,279.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,590.30 : 809,494.62 = 318,318.30 : x
  2. Step 2: Convert to fraction form
    586,590.30/809,494.62 = 318,318.30/x
  3. Step 3: Cross multiply
    586,590.30x = 809,494.62 × 318,318.30
  4. Step 4: Simplify right side
    586,590.30x = 257,676,951,297.55
  5. Step 5: Solve for x
    x = 257,676,951,297.55/586,590.30
  6. Step 6: Final answer
    x = 439,279.26

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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.