Home / 863,529.30-1,295,281.80-390,213.90

Finding the Fourth Proportional to 863,529.30, 1,295,281.80 and 390,213.90

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Solution

The fourth proportional to 863,529.30, 1,295,281.80 and 390,213.90 is: 585,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,529.30 : 1,295,281.80 = 390,213.90 : x
  2. Step 2: Convert to fraction form
    863,529.30/1,295,281.80 = 390,213.90/x
  3. Step 3: Cross multiply
    863,529.30x = 1,295,281.80 × 390,213.90
  4. Step 4: Simplify right side
    863,529.30x = 505,436,962,777.02
  5. Step 5: Solve for x
    x = 505,436,962,777.02/863,529.30
  6. Step 6: Final answer
    x = 585,315.36

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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.