Home / 1,591,389.45-2,387,060.78-393,311.86

Finding the Fourth Proportional to 1,591,389.45, 2,387,060.78 and 393,311.86

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Solution

The fourth proportional to 1,591,389.45, 2,387,060.78 and 393,311.86 is: 589,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591,389.45 : 2,387,060.78 = 393,311.86 : x
  2. Step 2: Convert to fraction form
    1,591,389.45/2,387,060.78 = 393,311.86/x
  3. Step 3: Cross multiply
    1,591,389.45x = 2,387,060.78 × 393,311.86
  4. Step 4: Simplify right side
    1,591,389.45x = 938,859,307,380.64
  5. Step 5: Solve for x
    x = 938,859,307,380.64/1,591,389.45
  6. Step 6: Final answer
    x = 589,962.00

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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.