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Finding the Fourth Proportional to 888,122.80, 1,330,653.30 and 413,835.40

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Solution

The fourth proportional to 888,122.80, 1,330,653.30 and 413,835.40 is: 620,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,122.80 : 1,330,653.30 = 413,835.40 : x
  2. Step 2: Convert to fraction form
    888,122.80/1,330,653.30 = 413,835.40/x
  3. Step 3: Cross multiply
    888,122.80x = 1,330,653.30 × 413,835.40
  4. Step 4: Simplify right side
    888,122.80x = 550,671,440,666.82
  5. Step 5: Solve for x
    x = 550,671,440,666.82/888,122.80
  6. Step 6: Final answer
    x = 620,039.75

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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.