Home / 820,102.01-1,230,240.63-346,835.21

Finding the Fourth Proportional to 820,102.01, 1,230,240.63 and 346,835.21

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Solution

The fourth proportional to 820,102.01, 1,230,240.63 and 346,835.21 is: 520,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,102.01 : 1,230,240.63 = 346,835.21 : x
  2. Step 2: Convert to fraction form
    820,102.01/1,230,240.63 = 346,835.21/x
  3. Step 3: Cross multiply
    820,102.01x = 1,230,240.63 × 346,835.21
  4. Step 4: Simplify right side
    820,102.01x = 426,690,767,256.58
  5. Step 5: Solve for x
    x = 426,690,767,256.58/820,102.01
  6. Step 6: Final answer
    x = 520,289.87

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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.