Home / 427,429.80-641,144.70-424,477.35

Finding the Fourth Proportional to 427,429.80, 641,144.70 and 424,477.35

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Solution

The fourth proportional to 427,429.80, 641,144.70 and 424,477.35 is: 636,716.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,429.80 : 641,144.70 = 424,477.35 : x
  2. Step 2: Convert to fraction form
    427,429.80/641,144.70 = 424,477.35/x
  3. Step 3: Cross multiply
    427,429.80x = 641,144.70 × 424,477.35
  4. Step 4: Simplify right side
    427,429.80x = 272,151,403,222.55
  5. Step 5: Solve for x
    x = 272,151,403,222.55/427,429.80
  6. Step 6: Final answer
    x = 636,716.03

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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.