Home / 459,964.86-686,449.79-429,508.59

Finding the Fourth Proportional to 459,964.86, 686,449.79 and 429,508.59

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Solution

The fourth proportional to 459,964.86, 686,449.79 and 429,508.59 is: 640,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,964.86 : 686,449.79 = 429,508.59 : x
  2. Step 2: Convert to fraction form
    459,964.86/686,449.79 = 429,508.59/x
  3. Step 3: Cross multiply
    459,964.86x = 686,449.79 × 429,508.59
  4. Step 4: Simplify right side
    459,964.86x = 294,836,079,261.15
  5. Step 5: Solve for x
    x = 294,836,079,261.15/459,964.86
  6. Step 6: Final answer
    x = 640,996.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.