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Finding the Fourth Proportional to 617,135.68, 851,711.34 and 355,500.04

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Solution

The fourth proportional to 617,135.68, 851,711.34 and 355,500.04 is: 490,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,135.68 : 851,711.34 = 355,500.04 : x
  2. Step 2: Convert to fraction form
    617,135.68/851,711.34 = 355,500.04/x
  3. Step 3: Cross multiply
    617,135.68x = 851,711.34 × 355,500.04
  4. Step 4: Simplify right side
    617,135.68x = 302,783,415,438.45
  5. Step 5: Solve for x
    x = 302,783,415,438.45/617,135.68
  6. Step 6: Final answer
    x = 490,626.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.