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Finding the Fourth Proportional to 692,993.85, 956,321.41 and 387,074.55

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Solution

The fourth proportional to 692,993.85, 956,321.41 and 387,074.55 is: 534,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,993.85 : 956,321.41 = 387,074.55 : x
  2. Step 2: Convert to fraction form
    692,993.85/956,321.41 = 387,074.55/x
  3. Step 3: Cross multiply
    692,993.85x = 956,321.41 × 387,074.55
  4. Step 4: Simplify right side
    692,993.85x = 370,167,678,484.74
  5. Step 5: Solve for x
    x = 370,167,678,484.74/692,993.85
  6. Step 6: Final answer
    x = 534,157.23

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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.