Home / 420,829.80-631,244.70-263,365.80

Finding the Fourth Proportional to 420,829.80, 631,244.70 and 263,365.80

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Solution

The fourth proportional to 420,829.80, 631,244.70 and 263,365.80 is: 395,048.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,829.80 : 631,244.70 = 263,365.80 : x
  2. Step 2: Convert to fraction form
    420,829.80/631,244.70 = 263,365.80/x
  3. Step 3: Cross multiply
    420,829.80x = 631,244.70 × 263,365.80
  4. Step 4: Simplify right side
    420,829.80x = 166,248,265,411.26
  5. Step 5: Solve for x
    x = 166,248,265,411.26/420,829.80
  6. Step 6: Final answer
    x = 395,048.70

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1.5x scale

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.