Home / 426,948.94-640,528.49-300,835.49

Finding the Fourth Proportional to 426,948.94, 640,528.49 and 300,835.49

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Solution

The fourth proportional to 426,948.94, 640,528.49 and 300,835.49 is: 451,327.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,948.94 : 640,528.49 = 300,835.49 : x
  2. Step 2: Convert to fraction form
    426,948.94/640,528.49 = 300,835.49/x
  3. Step 3: Cross multiply
    426,948.94x = 640,528.49 × 300,835.49
  4. Step 4: Simplify right side
    426,948.94x = 192,693,702,148.11
  5. Step 5: Solve for x
    x = 192,693,702,148.11/426,948.94
  6. Step 6: Final answer
    x = 451,327.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.