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Finding the Fourth Proportional to 549,378.33, 756,379.67 and 428,364.33

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Solution

The fourth proportional to 549,378.33, 756,379.67 and 428,364.33 is: 589,768.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,378.33 : 756,379.67 = 428,364.33 : x
  2. Step 2: Convert to fraction form
    549,378.33/756,379.67 = 428,364.33/x
  3. Step 3: Cross multiply
    549,378.33x = 756,379.67 × 428,364.33
  4. Step 4: Simplify right side
    549,378.33x = 324,006,068,423.35
  5. Step 5: Solve for x
    x = 324,006,068,423.35/549,378.33
  6. Step 6: Final answer
    x = 589,768.56

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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.