Home / 727,089.04-1,003,123.20-420,998.37

Finding the Fourth Proportional to 727,089.04, 1,003,123.20 and 420,998.37

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Solution

The fourth proportional to 727,089.04, 1,003,123.20 and 420,998.37 is: 580,827.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,089.04 : 1,003,123.20 = 420,998.37 : x
  2. Step 2: Convert to fraction form
    727,089.04/1,003,123.20 = 420,998.37/x
  3. Step 3: Cross multiply
    727,089.04x = 1,003,123.20 × 420,998.37
  4. Step 4: Simplify right side
    727,089.04x = 422,313,232,109.18
  5. Step 5: Solve for x
    x = 422,313,232,109.18/727,089.04
  6. Step 6: Final answer
    x = 580,827.39

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1.5x scale

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.