Home / 840,000.91-1,260,005.92-208,914.72

Finding the Fourth Proportional to 840,000.91, 1,260,005.92 and 208,914.72

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Solution

The fourth proportional to 840,000.91, 1,260,005.92 and 208,914.72 is: 313,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,000.91 : 1,260,005.92 = 208,914.72 : x
  2. Step 2: Convert to fraction form
    840,000.91/1,260,005.92 = 208,914.72/x
  3. Step 3: Cross multiply
    840,000.91x = 1,260,005.92 × 208,914.72
  4. Step 4: Simplify right side
    840,000.91x = 263,233,783,452.86
  5. Step 5: Solve for x
    x = 263,233,783,452.86/840,000.91
  6. Step 6: Final answer
    x = 313,373.21

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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.