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Finding the Fourth Proportional to 620,404.80, 856,166.40 and 365,740.80

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Solution

The fourth proportional to 620,404.80, 856,166.40 and 365,740.80 is: 504,726.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,404.80 : 856,166.40 = 365,740.80 : x
  2. Step 2: Convert to fraction form
    620,404.80/856,166.40 = 365,740.80/x
  3. Step 3: Cross multiply
    620,404.80x = 856,166.40 × 365,740.80
  4. Step 4: Simplify right side
    620,404.80x = 313,134,984,069.12
  5. Step 5: Solve for x
    x = 313,134,984,069.12/620,404.80
  6. Step 6: Final answer
    x = 504,726.89

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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.