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Finding the Fourth Proportional to 586,600.64, 809,504.16 and 318,328.64

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Solution

The fourth proportional to 586,600.64, 809,504.16 and 318,328.64 is: 439,290.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,600.64 : 809,504.16 = 318,328.64 : x
  2. Step 2: Convert to fraction form
    586,600.64/809,504.16 = 318,328.64/x
  3. Step 3: Cross multiply
    586,600.64x = 809,504.16 × 318,328.64
  4. Step 4: Simplify right side
    586,600.64x = 257,688,358,327.14
  5. Step 5: Solve for x
    x = 257,688,358,327.14/586,600.64
  6. Step 6: Final answer
    x = 439,290.96

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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.