Home / 389,269.20-583,903.80-380,521.20

Finding the Fourth Proportional to 389,269.20, 583,903.80 and 380,521.20

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Solution

The fourth proportional to 389,269.20, 583,903.80 and 380,521.20 is: 570,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,269.20 : 583,903.80 = 380,521.20 : x
  2. Step 2: Convert to fraction form
    389,269.20/583,903.80 = 380,521.20/x
  3. Step 3: Cross multiply
    389,269.20x = 583,903.80 × 380,521.20
  4. Step 4: Simplify right side
    389,269.20x = 222,187,774,660.56
  5. Step 5: Solve for x
    x = 222,187,774,660.56/389,269.20
  6. Step 6: Final answer
    x = 570,781.80

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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.