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Finding the Fourth Proportional to 549,379.33, 756,381.04 and 428,365.33

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Solution

The fourth proportional to 549,379.33, 756,381.04 and 428,365.33 is: 589,769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,379.33 : 756,381.04 = 428,365.33 : x
  2. Step 2: Convert to fraction form
    549,379.33/756,381.04 = 428,365.33/x
  3. Step 3: Cross multiply
    549,379.33x = 756,381.04 × 428,365.33
  4. Step 4: Simplify right side
    549,379.33x = 324,007,413,805.34
  5. Step 5: Solve for x
    x = 324,007,413,805.34/549,379.33
  6. Step 6: Final answer
    x = 589,769.94

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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.