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Finding the Fourth Proportional to 549,980.13, 757,552.89 and 388,554.93

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Solution

The fourth proportional to 549,980.13, 757,552.89 and 388,554.93 is: 535,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,980.13 : 757,552.89 = 388,554.93 : x
  2. Step 2: Convert to fraction form
    549,980.13/757,552.89 = 388,554.93/x
  3. Step 3: Cross multiply
    549,980.13x = 757,552.89 × 388,554.93
  4. Step 4: Simplify right side
    549,980.13x = 294,350,910,145.25
  5. Step 5: Solve for x
    x = 294,350,910,145.25/549,980.13
  6. Step 6: Final answer
    x = 535,202.81

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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.