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Finding the Fourth Proportional to 586,577.64, 809,477.13 and 318,305.64

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Solution

The fourth proportional to 586,577.64, 809,477.13 and 318,305.64 is: 439,261.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,577.64 : 809,477.13 = 318,305.64 : x
  2. Step 2: Convert to fraction form
    586,577.64/809,477.13 = 318,305.64/x
  3. Step 3: Cross multiply
    586,577.64x = 809,477.13 × 318,305.64
  4. Step 4: Simplify right side
    586,577.64x = 257,661,135,930.01
  5. Step 5: Solve for x
    x = 257,661,135,930.01/586,577.64
  6. Step 6: Final answer
    x = 439,261.78

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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.