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Finding the Fourth Proportional to 549,981.63, 757,554.93 and 388,556.46

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Solution

The fourth proportional to 549,981.63, 757,554.93 and 388,556.46 is: 535,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,981.63 : 757,554.93 = 388,556.46 : x
  2. Step 2: Convert to fraction form
    549,981.63/757,554.93 = 388,556.46/x
  3. Step 3: Cross multiply
    549,981.63x = 757,554.93 × 388,556.46
  4. Step 4: Simplify right side
    549,981.63x = 294,352,861,856.35
  5. Step 5: Solve for x
    x = 294,352,861,856.35/549,981.63
  6. Step 6: Final answer
    x = 535,204.90

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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.