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Finding the Fourth Proportional to 495,519.64, 684,100.40 and 326,245.84

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Solution

The fourth proportional to 495,519.64, 684,100.40 and 326,245.84 is: 450,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,519.64 : 684,100.40 = 326,245.84 : x
  2. Step 2: Convert to fraction form
    495,519.64/684,100.40 = 326,245.84/x
  3. Step 3: Cross multiply
    495,519.64x = 684,100.40 × 326,245.84
  4. Step 4: Simplify right side
    495,519.64x = 223,184,909,642.34
  5. Step 5: Solve for x
    x = 223,184,909,642.34/495,519.64
  6. Step 6: Final answer
    x = 450,405.78

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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.